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Commercial Sissy Squat Machine | Quad Isolation + Ab Station | 250kg Rated
In Stock — Sydney Warehouse
🌏 On Display — Milperra Showroom
🦿 Quad Isolation + Ab Training
🚚 Fast Australia-Wide Delivery
Commercial Sissy Squat Machine is the most effective compact quad isolation station available for home gyms, PT studios and commercial facilities across Australia. Combining sissy squats, reverse knee extensions and hack squat mechanics to target all 4 heads of the quadriceps plus the glutes, this machine simultaneously strengthens the knee and hip joints and trains core balance and stability — all in a single 646mm × 1110mm footprint that fits where larger leg machines cannot. Featuring fully adjustable heavily padded calf pads, an adjustable back support pad, a large anti-slip footplate rated to 250kg, and dual lockout positions for multiple start and stop configurations. Also functions as an ab crunch and sit-up station — lock your feet in, lay back, and train your core to the max. On display at our Milperra NSW showroom.
4Quad Heads Targeted
250kgWeight Capacity
3in1Squat + Abs + Rehab
32kgMachine Weight
Complete Lower Body & Core Activation
All 4 Quad Heads
Rectus femoris, vastus lateralis, vastus medialis (tear-drop) and vastus intermedius — near 100% quad isolation
Glutes
Gluteus maximus activation through the hip extension component of the sissy squat pattern
Core & Abs
Deep core stabilisers engaged throughout the sissy squat. Full ab crunch and sit-up capability with feet locked
Knee & Hip Joints
Strengthens the knee and hip joint structures — valuable for injury prevention and rehabilitation programming
ℹ️ Why sissy squats are uniquely effective for quad development: The sissy squat is one of the only exercises that fully isolates the rectus femoris — the quad head that crosses both the knee and the hip joint and is chronically under-developed by standard leg press and hack squat movements. The forward lean and knee-dominant movement pattern of the sissy squat creates a deep stretch in the rectus femoris under load, producing the tear-drop quad shape that compound leg exercises alone cannot build. The machine version makes this movement safe, controlled and accessible at any training level.
Key Features
Commercial Sissy Squat Machine — Full Feature Set
Targets All 4 Heads of the QuadricepsCombines sissy squat, reverse knee extension and hack squat mechanics to hit all 4 quadriceps heads — rectus femoris, vastus lateralis, vastus medialis and vastus intermedius — in a single controlled movement that standard squats and leg press cannot fully replicate
Fully Adjustable Heavily Padded Calf PadsThick high-density foam calf pads covered in anti-slip leather adjust to accommodate users of all heights — ensuring correct positioning and maximum comfort during deep sissy squat repetitions regardless of leg length
Adjustable Back Support PadOne fully adjustable back pad with dual lockout positions provides support and enables multiple start and stop positions — allowing beginners to limit range of motion and advanced athletes to train through a full deep range
Large Anti-Slip Footplate — 250kg RatedOversized non-slip footplate provides a stable, secure base for athletes of all sizes. Rated to 250kg total user weight capacity. High-density PVC foot guards protect the frame and floor contact points
Ab Crunch & Sit-Up StationLock your feet into the footplate, lay back and perform ab crunches, sit-ups and Russian twists with feet secured. Transforms the machine into a complete core training station — maximising the value of a single compact piece of equipment
Heavy-Gauge Commercial Steel Frame50×75×3mm and 50×50×3mm heavy-gauge steel tubing throughout — commercial-grade construction engineered for PT studios, hotel gyms, schools and high-frequency multi-user commercial environments
Commercial Scratch-Resistant Powder CoatHigh-quality electrostatic metallic black powder coat finish resists scratching, chipping and corrosion under daily commercial use — maintaining a professional appearance in busy gym environments
Compact Space-Saving Footprint646mm (W) × 1110mm (L) × 520mm (H) — delivers complete quad isolation and ab training capability in a footprint smaller than most adjustable benches. The most space-efficient quad isolation solution available
What Can You Train on the Sissy Squat Machine?
Quad Isolation
- Sissy squat (bodyweight)
- Weighted sissy squat (plate or dumbbell held)
- Reverse knee extension
- Hack squat pattern
- Partial range sissy squat (beginner / rehab)
Core & Ab Training
- Sit-up (feet secured)
- Ab crunch (decline variation)
- Russian twist (feet secured)
- Hip flexor stretch & hold
- Weighted crunch (plate on chest)
Rehabilitation & Conditioning
- Patellar tendon rehab (partial sissy squat)
- Knee joint strengthening
- Hip flexor activation
- Balance & proprioception training
- Post-ACL recovery quad activation
Advanced Variations
- Sissy squat with added resistance band
- Tempo sissy squat (4-second negative)
- Isometric sissy squat hold
- Single-leg sissy squat (advanced)
- Sissy squat superset with leg press
The Right Machine For
- Bodybuilders & physique athletes — targeting the rectus femoris and vastus medialis for complete tear-drop quad development that standard leg press and hack squat cannot fully achieve
- PT studios & boutique gyms — delivers quad isolation and ab training in a single compact machine. Commercial-grade frame rated for multi-user daily use without maintenance concerns
- Home gym owners — space-efficient alternative to a full leg extension machine. Covers quad isolation, knee strengthening and core training in a 646mm × 1110mm footprint
- Rehabilitation & injury recovery — controlled range of motion with adjustable lockout positions makes it ideal for patellar tendon rehab, post-ACL quad activation and knee joint strengthening protocols
- CrossFit & functional athletes — develops the quad strength and knee stability needed to support heavy squats, Olympic lifts and high-rep leg training without the spinal load of barbell squats
- Schools & corporate gyms — safe, guided movement machine suitable for beginner to advanced users with no spotter required and minimal injury risk when used correctly
Pros & Cons
✓ Pros
- Targets all 4 quadriceps heads including the rectus femoris — the most under-developed quad muscle in standard training
- Dual-purpose: complete sissy squat station + ab crunch and sit-up station
- Fully adjustable calf pads and back pad — fits all user heights
- 250kg weight capacity — suitable for all athlete sizes
- Commercial heavy-gauge 50×75×3mm steel frame
- Compact 646mm × 1110mm footprint — fits where leg machines cannot
- No spinal load — suitable for users avoiding barbell squats due to back issues
- On display at Milperra showroom — test before you buy
✗ Cons
- 6-month warranty on upholstery and grips only — frame warranty period should be confirmed with us before purchase
- Isolation machine only — not a replacement for compound leg training (pair with a rack or functional trainer for full lower body programming)
- 30kg sissy squats require strong knee tendons — beginners should start bodyweight only and progress slowly
- Not suitable for outdoor or uncovered environments
Full Specifications
| Machine Type | Commercial Sissy Squat Machine — Quad Isolation + Ab Training Station |
| Dimensions | 646mm (W) × 1110mm (L) × 520mm (H) |
| Frame | 50×75×3mm and 50×50×3mm heavy-gauge steel tubing |
| Weight Capacity | 250kg |
| Machine Weight | 32kg |
| Finish | High-quality electrostatic metallic black powder coat — commercial scratch-resistant |
| Adjustments | Adjustable calf pads · Adjustable back pad position · Dual lockout positions |
| Cushions | High-density foam covered in anti-slip leather upholstery |
| Footplate | Large anti-slip non-slip footplate with high-density PVC foot guards |
| Grips | Non-absorbing PVC compound retained with aluminium collars |
| Muscles Targeted | All 4 quadriceps heads · Glutes · Core · Hip flexors · Knee and hip joint stabilisers |
| Additional Function | Ab crunch and sit-up station (feet secured in footplate) |
| Warranty | 6 months on upholstery, grips and consumables — contact us for frame warranty details |
| Best For | Home gyms, PT studios, commercial gyms, schools, rehabilitation facilities |
| Delivery | Australia-wide freight — Sydney, Melbourne, Brisbane, Adelaide, Perth, Canberra |
On Display at Milperra
10/202 Milperra Road, Milperra NSW 2214 — test the adjustable pads, feel the footplate and perform a bodyweight rep before committing
📍 Get Directions
Showroom Hours
Mon–Fri 9am–5pm
Saturday 9am–1pm
Sunday: Closed
Our team can show you correct sissy squat technique and help with pad adjustments for your height
Contact Us
Call 1300 247 888
WhatsApp +61 412 029 000
Mon–Fri 9am–5pm · Sat 9am–1pm
Free Sydney PickupCollect from our Milperra NSW warehouse. Mon–Fri 9am–5pm · Sat 9am–1pm
Australia-Wide DeliveryFast tracked delivery to Sydney, Melbourne, Brisbane, Adelaide, Perth, Canberra and all regional areas
Depot PickupMelbourne · Brisbane · Adelaide · Canberra — contact us to arrange depot collection in your state
Frequently Bought With Sissy Squat Machines
🏗 Functional Trainers & Smith Machines →
🔩 Power Racks & Squat Racks →
🪟 Rubber Gym Flooring Tiles →
🪑 Adjustable Weight Benches →
Frequently Asked Questions
Commercial Sissy Squat Machine — FAQ
A sissy squat machine is a dedicated quad isolation station that supports the user during the sissy squat movement — a knee-dominant exercise where the body leans backward with knees bending forward, creating an intense stretch and contraction across all four heads of the quadriceps. Unlike a standard squat where the hips hinge backward and the glutes and hamstrings share the load, the sissy squat places near 100% of the load on the quadriceps — particularly the rectus femoris and vastus medialis (tear-drop). The machine provides a stable calf pad, adjustable back support and a secure footplate so the movement can be performed safely with full control and range of motion.
The sissy squat machine primarily targets all 4 heads of the quadriceps: the rectus femoris (the only quad head that crosses both the knee and hip), vastus lateralis (outer quad), vastus medialis (tear-drop inner quad) and vastus intermedius (deep central quad). Secondary muscles engaged include the glutes through hip extension, the deep core stabilisers and hip flexors throughout the movement, and the knee and hip joint structures which are progressively strengthened under controlled load. The ab crunch function additionally targets the rectus abdominis and obliques directly.
Yes, with the correct approach. The machine's dual lockout positions allow beginners to limit the range of motion to a partial sissy squat while building quad and knee joint strength progressively. Beginners should start with bodyweight only — no added weight — and focus on controlled movement with a slow descent. The adjustable calf and back pads accommodate different body proportions, and the stable frame prevents the balance challenges of unassisted floor-based sissy squats. Progress to a full range of motion before adding any external resistance.
Unassisted floor sissy squats require significant ankle flexibility, balance and body awareness that most people do not have without training. The machine solves all three: the calf pad provides the ankle stability needed to maintain the backward lean, the back pad provides the balance reference point, and the footplate prevents foot slipping. This means you can focus entirely on the quad contraction and movement pattern rather than fighting balance and grip — allowing you to train through a deeper, more productive range of motion from your very first session.
Yes — this is one of the key advantages of this machine. Lock your feet into the footplate, lay back, and perform ab crunches, sit-ups and Russian twists with your feet fully secured. This creates a decline crunch position that places maximum tension on the rectus abdominis throughout the full range of motion — significantly more effective than floor crunches where the feet are unsecured. You can also add a weight plate on your chest to increase resistance. This dual function means the machine delivers both leg isolation and core training value in a single compact piece of equipment.
The sissy squat machine can be used as part of a structured knee rehabilitation protocol, particularly for patellar tendon strengthening and post-ACL quad activation, when used under the guidance of a physiotherapist or sports medicine practitioner. The adjustable lockout positions allow range of motion to be limited to a pain-free zone. However, people with existing knee injuries should consult their physiotherapist before using this machine. The sissy squat creates significant patellar tendon load — which is precisely what makes it effective for quad development and knee strengthening, but requires careful progression for injured knees.
Both target the quadriceps but in fundamentally different ways. A leg extension machine isolates the quads in a seated, open-chain movement that primarily trains the muscle in a shortened position. The sissy squat machine trains the quads through a closed-chain movement that includes a deep stretch of the rectus femoris — the quad head a seated leg extension cannot fully load. Research suggests that training muscles through a full range including the stretched position produces greater hypertrophy. The sissy squat also engages the core and builds functional knee joint stability that a seated leg extension does not. For complete quad development, the two machines complement each other rather than compete.
Yes — the Commercial Sissy Squat Machine is on display at our Milperra NSW showroom at 10/202 Milperra Road, Milperra NSW 2214. Mon–Fri 9am–5pm, Sat 9am–1pm. Test the pad adjustments for your height, feel the footplate stability and perform a bodyweight rep before committing. Our team is available to show correct sissy squat technique and help you assess whether this machine is the right fit for your training goals and space. Call 1300 247 888 if you have questions before visiting.
Yes. We deliver to all Australian states and territories — Sydney, Melbourne, Brisbane, Adelaide, Perth, Canberra and all regional areas. Free pickup is available from our Milperra NSW warehouse (Mon–Fri 9am–5pm, Sat 9am–1pm). Depot pickup is available in Melbourne, Brisbane, Adelaide and Canberra. Call 1300 247 888 or WhatsApp +61 412 029 000 for a delivery quote to your postcode.
Commercial Sissy Squat Machine — Delivery Areas Australia:
Sydney (NSW) · Parramatta · Penrith · Blacktown · Liverpool · Campbelltown · Bankstown · Eastern Suburbs · Northern Beaches · Inner West · North Shore · Western Sydney · Sutherland Shire · Castle Hill · Wollongong · Newcastle · Melbourne (VIC) · Richmond · Brunswick · Essendon · Geelong · Brisbane (QLD) · Gold Coast · Sunshine Coast · Ipswich · Adelaide (SA) · Norwood · Glenelg · Perth (WA) · Canberra (ACT) · Hobart (TAS) · Darwin (NT) · All Regional Australia
Sydney (NSW) · Parramatta · Penrith · Blacktown · Liverpool · Campbelltown · Bankstown · Eastern Suburbs · Northern Beaches · Inner West · North Shore · Western Sydney · Sutherland Shire · Castle Hill · Wollongong · Newcastle · Melbourne (VIC) · Richmond · Brunswick · Essendon · Geelong · Brisbane (QLD) · Gold Coast · Sunshine Coast · Ipswich · Adelaide (SA) · Norwood · Glenelg · Perth (WA) · Canberra (ACT) · Hobart (TAS) · Darwin (NT) · All Regional Australia
$260.01
Commercial Sissy Squat Machine | Quad Isolation + Ab Station | 250kg Rated—
$260.01
Commercial Sissy Squat Machine | Quad Isolation + Ab Station | 250kg Rated
In Stock — Sydney Warehouse
🌏 On Display — Milperra Showroom
🦿 Quad Isolation + Ab Training
🚚 Fast Australia-Wide Delivery
Commercial Sissy Squat Machine is the most effective compact quad isolation station available for home gyms, PT studios and commercial facilities across Australia. Combining sissy squats, reverse knee extensions and hack squat mechanics to target all 4 heads of the quadriceps plus the glutes, this machine simultaneously strengthens the knee and hip joints and trains core balance and stability — all in a single 646mm × 1110mm footprint that fits where larger leg machines cannot. Featuring fully adjustable heavily padded calf pads, an adjustable back support pad, a large anti-slip footplate rated to 250kg, and dual lockout positions for multiple start and stop configurations. Also functions as an ab crunch and sit-up station — lock your feet in, lay back, and train your core to the max. On display at our Milperra NSW showroom.
4Quad Heads Targeted
250kgWeight Capacity
3in1Squat + Abs + Rehab
32kgMachine Weight
Complete Lower Body & Core Activation
All 4 Quad Heads
Rectus femoris, vastus lateralis, vastus medialis (tear-drop) and vastus intermedius — near 100% quad isolation
Glutes
Gluteus maximus activation through the hip extension component of the sissy squat pattern
Core & Abs
Deep core stabilisers engaged throughout the sissy squat. Full ab crunch and sit-up capability with feet locked
Knee & Hip Joints
Strengthens the knee and hip joint structures — valuable for injury prevention and rehabilitation programming
ℹ️ Why sissy squats are uniquely effective for quad development: The sissy squat is one of the only exercises that fully isolates the rectus femoris — the quad head that crosses both the knee and the hip joint and is chronically under-developed by standard leg press and hack squat movements. The forward lean and knee-dominant movement pattern of the sissy squat creates a deep stretch in the rectus femoris under load, producing the tear-drop quad shape that compound leg exercises alone cannot build. The machine version makes this movement safe, controlled and accessible at any training level.
Key Features
Commercial Sissy Squat Machine — Full Feature Set
Targets All 4 Heads of the QuadricepsCombines sissy squat, reverse knee extension and hack squat mechanics to hit all 4 quadriceps heads — rectus femoris, vastus lateralis, vastus medialis and vastus intermedius — in a single controlled movement that standard squats and leg press cannot fully replicate
Fully Adjustable Heavily Padded Calf PadsThick high-density foam calf pads covered in anti-slip leather adjust to accommodate users of all heights — ensuring correct positioning and maximum comfort during deep sissy squat repetitions regardless of leg length
Adjustable Back Support PadOne fully adjustable back pad with dual lockout positions provides support and enables multiple start and stop positions — allowing beginners to limit range of motion and advanced athletes to train through a full deep range
Large Anti-Slip Footplate — 250kg RatedOversized non-slip footplate provides a stable, secure base for athletes of all sizes. Rated to 250kg total user weight capacity. High-density PVC foot guards protect the frame and floor contact points
Ab Crunch & Sit-Up StationLock your feet into the footplate, lay back and perform ab crunches, sit-ups and Russian twists with feet secured. Transforms the machine into a complete core training station — maximising the value of a single compact piece of equipment
Heavy-Gauge Commercial Steel Frame50×75×3mm and 50×50×3mm heavy-gauge steel tubing throughout — commercial-grade construction engineered for PT studios, hotel gyms, schools and high-frequency multi-user commercial environments
Commercial Scratch-Resistant Powder CoatHigh-quality electrostatic metallic black powder coat finish resists scratching, chipping and corrosion under daily commercial use — maintaining a professional appearance in busy gym environments
Compact Space-Saving Footprint646mm (W) × 1110mm (L) × 520mm (H) — delivers complete quad isolation and ab training capability in a footprint smaller than most adjustable benches. The most space-efficient quad isolation solution available
What Can You Train on the Sissy Squat Machine?
Quad Isolation
- Sissy squat (bodyweight)
- Weighted sissy squat (plate or dumbbell held)
- Reverse knee extension
- Hack squat pattern
- Partial range sissy squat (beginner / rehab)
Core & Ab Training
- Sit-up (feet secured)
- Ab crunch (decline variation)
- Russian twist (feet secured)
- Hip flexor stretch & hold
- Weighted crunch (plate on chest)
Rehabilitation & Conditioning
- Patellar tendon rehab (partial sissy squat)
- Knee joint strengthening
- Hip flexor activation
- Balance & proprioception training
- Post-ACL recovery quad activation
Advanced Variations
- Sissy squat with added resistance band
- Tempo sissy squat (4-second negative)
- Isometric sissy squat hold
- Single-leg sissy squat (advanced)
- Sissy squat superset with leg press
The Right Machine For
- Bodybuilders & physique athletes — targeting the rectus femoris and vastus medialis for complete tear-drop quad development that standard leg press and hack squat cannot fully achieve
- PT studios & boutique gyms — delivers quad isolation and ab training in a single compact machine. Commercial-grade frame rated for multi-user daily use without maintenance concerns
- Home gym owners — space-efficient alternative to a full leg extension machine. Covers quad isolation, knee strengthening and core training in a 646mm × 1110mm footprint
- Rehabilitation & injury recovery — controlled range of motion with adjustable lockout positions makes it ideal for patellar tendon rehab, post-ACL quad activation and knee joint strengthening protocols
- CrossFit & functional athletes — develops the quad strength and knee stability needed to support heavy squats, Olympic lifts and high-rep leg training without the spinal load of barbell squats
- Schools & corporate gyms — safe, guided movement machine suitable for beginner to advanced users with no spotter required and minimal injury risk when used correctly
Pros & Cons
✓ Pros
- Targets all 4 quadriceps heads including the rectus femoris — the most under-developed quad muscle in standard training
- Dual-purpose: complete sissy squat station + ab crunch and sit-up station
- Fully adjustable calf pads and back pad — fits all user heights
- 250kg weight capacity — suitable for all athlete sizes
- Commercial heavy-gauge 50×75×3mm steel frame
- Compact 646mm × 1110mm footprint — fits where leg machines cannot
- No spinal load — suitable for users avoiding barbell squats due to back issues
- On display at Milperra showroom — test before you buy
✗ Cons
- 6-month warranty on upholstery and grips only — frame warranty period should be confirmed with us before purchase
- Isolation machine only — not a replacement for compound leg training (pair with a rack or functional trainer for full lower body programming)
- 30kg sissy squats require strong knee tendons — beginners should start bodyweight only and progress slowly
- Not suitable for outdoor or uncovered environments
Full Specifications
| Machine Type | Commercial Sissy Squat Machine — Quad Isolation + Ab Training Station |
| Dimensions | 646mm (W) × 1110mm (L) × 520mm (H) |
| Frame | 50×75×3mm and 50×50×3mm heavy-gauge steel tubing |
| Weight Capacity | 250kg |
| Machine Weight | 32kg |
| Finish | High-quality electrostatic metallic black powder coat — commercial scratch-resistant |
| Adjustments | Adjustable calf pads · Adjustable back pad position · Dual lockout positions |
| Cushions | High-density foam covered in anti-slip leather upholstery |
| Footplate | Large anti-slip non-slip footplate with high-density PVC foot guards |
| Grips | Non-absorbing PVC compound retained with aluminium collars |
| Muscles Targeted | All 4 quadriceps heads · Glutes · Core · Hip flexors · Knee and hip joint stabilisers |
| Additional Function | Ab crunch and sit-up station (feet secured in footplate) |
| Warranty | 6 months on upholstery, grips and consumables — contact us for frame warranty details |
| Best For | Home gyms, PT studios, commercial gyms, schools, rehabilitation facilities |
| Delivery | Australia-wide freight — Sydney, Melbourne, Brisbane, Adelaide, Perth, Canberra |
On Display at Milperra
10/202 Milperra Road, Milperra NSW 2214 — test the adjustable pads, feel the footplate and perform a bodyweight rep before committing
📍 Get Directions
Showroom Hours
Mon–Fri 9am–5pm
Saturday 9am–1pm
Sunday: Closed
Our team can show you correct sissy squat technique and help with pad adjustments for your height
Contact Us
Call 1300 247 888
WhatsApp +61 412 029 000
Mon–Fri 9am–5pm · Sat 9am–1pm
Free Sydney PickupCollect from our Milperra NSW warehouse. Mon–Fri 9am–5pm · Sat 9am–1pm
Australia-Wide DeliveryFast tracked delivery to Sydney, Melbourne, Brisbane, Adelaide, Perth, Canberra and all regional areas
Depot PickupMelbourne · Brisbane · Adelaide · Canberra — contact us to arrange depot collection in your state
Frequently Bought With Sissy Squat Machines
🏗 Functional Trainers & Smith Machines →
🔩 Power Racks & Squat Racks →
🪟 Rubber Gym Flooring Tiles →
🪑 Adjustable Weight Benches →
Frequently Asked Questions
Commercial Sissy Squat Machine — FAQ
A sissy squat machine is a dedicated quad isolation station that supports the user during the sissy squat movement — a knee-dominant exercise where the body leans backward with knees bending forward, creating an intense stretch and contraction across all four heads of the quadriceps. Unlike a standard squat where the hips hinge backward and the glutes and hamstrings share the load, the sissy squat places near 100% of the load on the quadriceps — particularly the rectus femoris and vastus medialis (tear-drop). The machine provides a stable calf pad, adjustable back support and a secure footplate so the movement can be performed safely with full control and range of motion.
The sissy squat machine primarily targets all 4 heads of the quadriceps: the rectus femoris (the only quad head that crosses both the knee and hip), vastus lateralis (outer quad), vastus medialis (tear-drop inner quad) and vastus intermedius (deep central quad). Secondary muscles engaged include the glutes through hip extension, the deep core stabilisers and hip flexors throughout the movement, and the knee and hip joint structures which are progressively strengthened under controlled load. The ab crunch function additionally targets the rectus abdominis and obliques directly.
Yes, with the correct approach. The machine's dual lockout positions allow beginners to limit the range of motion to a partial sissy squat while building quad and knee joint strength progressively. Beginners should start with bodyweight only — no added weight — and focus on controlled movement with a slow descent. The adjustable calf and back pads accommodate different body proportions, and the stable frame prevents the balance challenges of unassisted floor-based sissy squats. Progress to a full range of motion before adding any external resistance.
Unassisted floor sissy squats require significant ankle flexibility, balance and body awareness that most people do not have without training. The machine solves all three: the calf pad provides the ankle stability needed to maintain the backward lean, the back pad provides the balance reference point, and the footplate prevents foot slipping. This means you can focus entirely on the quad contraction and movement pattern rather than fighting balance and grip — allowing you to train through a deeper, more productive range of motion from your very first session.
Yes — this is one of the key advantages of this machine. Lock your feet into the footplate, lay back, and perform ab crunches, sit-ups and Russian twists with your feet fully secured. This creates a decline crunch position that places maximum tension on the rectus abdominis throughout the full range of motion — significantly more effective than floor crunches where the feet are unsecured. You can also add a weight plate on your chest to increase resistance. This dual function means the machine delivers both leg isolation and core training value in a single compact piece of equipment.
The sissy squat machine can be used as part of a structured knee rehabilitation protocol, particularly for patellar tendon strengthening and post-ACL quad activation, when used under the guidance of a physiotherapist or sports medicine practitioner. The adjustable lockout positions allow range of motion to be limited to a pain-free zone. However, people with existing knee injuries should consult their physiotherapist before using this machine. The sissy squat creates significant patellar tendon load — which is precisely what makes it effective for quad development and knee strengthening, but requires careful progression for injured knees.
Both target the quadriceps but in fundamentally different ways. A leg extension machine isolates the quads in a seated, open-chain movement that primarily trains the muscle in a shortened position. The sissy squat machine trains the quads through a closed-chain movement that includes a deep stretch of the rectus femoris — the quad head a seated leg extension cannot fully load. Research suggests that training muscles through a full range including the stretched position produces greater hypertrophy. The sissy squat also engages the core and builds functional knee joint stability that a seated leg extension does not. For complete quad development, the two machines complement each other rather than compete.
Yes — the Commercial Sissy Squat Machine is on display at our Milperra NSW showroom at 10/202 Milperra Road, Milperra NSW 2214. Mon–Fri 9am–5pm, Sat 9am–1pm. Test the pad adjustments for your height, feel the footplate stability and perform a bodyweight rep before committing. Our team is available to show correct sissy squat technique and help you assess whether this machine is the right fit for your training goals and space. Call 1300 247 888 if you have questions before visiting.
Yes. We deliver to all Australian states and territories — Sydney, Melbourne, Brisbane, Adelaide, Perth, Canberra and all regional areas. Free pickup is available from our Milperra NSW warehouse (Mon–Fri 9am–5pm, Sat 9am–1pm). Depot pickup is available in Melbourne, Brisbane, Adelaide and Canberra. Call 1300 247 888 or WhatsApp +61 412 029 000 for a delivery quote to your postcode.
Commercial Sissy Squat Machine — Delivery Areas Australia:
Sydney (NSW) · Parramatta · Penrith · Blacktown · Liverpool · Campbelltown · Bankstown · Eastern Suburbs · Northern Beaches · Inner West · North Shore · Western Sydney · Sutherland Shire · Castle Hill · Wollongong · Newcastle · Melbourne (VIC) · Richmond · Brunswick · Essendon · Geelong · Brisbane (QLD) · Gold Coast · Sunshine Coast · Ipswich · Adelaide (SA) · Norwood · Glenelg · Perth (WA) · Canberra (ACT) · Hobart (TAS) · Darwin (NT) · All Regional Australia
Sydney (NSW) · Parramatta · Penrith · Blacktown · Liverpool · Campbelltown · Bankstown · Eastern Suburbs · Northern Beaches · Inner West · North Shore · Western Sydney · Sutherland Shire · Castle Hill · Wollongong · Newcastle · Melbourne (VIC) · Richmond · Brunswick · Essendon · Geelong · Brisbane (QLD) · Gold Coast · Sunshine Coast · Ipswich · Adelaide (SA) · Norwood · Glenelg · Perth (WA) · Canberra (ACT) · Hobart (TAS) · Darwin (NT) · All Regional Australia
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
In Stock — Sydney Warehouse
🌏 On Display — Milperra Showroom
🦿 Quad Isolation + Ab Training
🚚 Fast Australia-Wide Delivery
Commercial Sissy Squat Machine is the most effective compact quad isolation station available for home gyms, PT studios and commercial facilities across Australia. Combining sissy squats, reverse knee extensions and hack squat mechanics to target all 4 heads of the quadriceps plus the glutes, this machine simultaneously strengthens the knee and hip joints and trains core balance and stability — all in a single 646mm × 1110mm footprint that fits where larger leg machines cannot. Featuring fully adjustable heavily padded calf pads, an adjustable back support pad, a large anti-slip footplate rated to 250kg, and dual lockout positions for multiple start and stop configurations. Also functions as an ab crunch and sit-up station — lock your feet in, lay back, and train your core to the max. On display at our Milperra NSW showroom.
4Quad Heads Targeted
250kgWeight Capacity
3in1Squat + Abs + Rehab
32kgMachine Weight
Complete Lower Body & Core Activation
All 4 Quad Heads
Rectus femoris, vastus lateralis, vastus medialis (tear-drop) and vastus intermedius — near 100% quad isolation
Glutes
Gluteus maximus activation through the hip extension component of the sissy squat pattern
Core & Abs
Deep core stabilisers engaged throughout the sissy squat. Full ab crunch and sit-up capability with feet locked
Knee & Hip Joints
Strengthens the knee and hip joint structures — valuable for injury prevention and rehabilitation programming
ℹ️ Why sissy squats are uniquely effective for quad development: The sissy squat is one of the only exercises that fully isolates the rectus femoris — the quad head that crosses both the knee and the hip joint and is chronically under-developed by standard leg press and hack squat movements. The forward lean and knee-dominant movement pattern of the sissy squat creates a deep stretch in the rectus femoris under load, producing the tear-drop quad shape that compound leg exercises alone cannot build. The machine version makes this movement safe, controlled and accessible at any training level.
Key Features
Commercial Sissy Squat Machine — Full Feature Set
Targets All 4 Heads of the QuadricepsCombines sissy squat, reverse knee extension and hack squat mechanics to hit all 4 quadriceps heads — rectus femoris, vastus lateralis, vastus medialis and vastus intermedius — in a single controlled movement that standard squats and leg press cannot fully replicate
Fully Adjustable Heavily Padded Calf PadsThick high-density foam calf pads covered in anti-slip leather adjust to accommodate users of all heights — ensuring correct positioning and maximum comfort during deep sissy squat repetitions regardless of leg length
Adjustable Back Support PadOne fully adjustable back pad with dual lockout positions provides support and enables multiple start and stop positions — allowing beginners to limit range of motion and advanced athletes to train through a full deep range
Large Anti-Slip Footplate — 250kg RatedOversized non-slip footplate provides a stable, secure base for athletes of all sizes. Rated to 250kg total user weight capacity. High-density PVC foot guards protect the frame and floor contact points
Ab Crunch & Sit-Up StationLock your feet into the footplate, lay back and perform ab crunches, sit-ups and Russian twists with feet secured. Transforms the machine into a complete core training station — maximising the value of a single compact piece of equipment
Heavy-Gauge Commercial Steel Frame50×75×3mm and 50×50×3mm heavy-gauge steel tubing throughout — commercial-grade construction engineered for PT studios, hotel gyms, schools and high-frequency multi-user commercial environments
Commercial Scratch-Resistant Powder CoatHigh-quality electrostatic metallic black powder coat finish resists scratching, chipping and corrosion under daily commercial use — maintaining a professional appearance in busy gym environments
Compact Space-Saving Footprint646mm (W) × 1110mm (L) × 520mm (H) — delivers complete quad isolation and ab training capability in a footprint smaller than most adjustable benches. The most space-efficient quad isolation solution available
What Can You Train on the Sissy Squat Machine?
Quad Isolation
- Sissy squat (bodyweight)
- Weighted sissy squat (plate or dumbbell held)
- Reverse knee extension
- Hack squat pattern
- Partial range sissy squat (beginner / rehab)
Core & Ab Training
- Sit-up (feet secured)
- Ab crunch (decline variation)
- Russian twist (feet secured)
- Hip flexor stretch & hold
- Weighted crunch (plate on chest)
Rehabilitation & Conditioning
- Patellar tendon rehab (partial sissy squat)
- Knee joint strengthening
- Hip flexor activation
- Balance & proprioception training
- Post-ACL recovery quad activation
Advanced Variations
- Sissy squat with added resistance band
- Tempo sissy squat (4-second negative)
- Isometric sissy squat hold
- Single-leg sissy squat (advanced)
- Sissy squat superset with leg press
The Right Machine For
- Bodybuilders & physique athletes — targeting the rectus femoris and vastus medialis for complete tear-drop quad development that standard leg press and hack squat cannot fully achieve
- PT studios & boutique gyms — delivers quad isolation and ab training in a single compact machine. Commercial-grade frame rated for multi-user daily use without maintenance concerns
- Home gym owners — space-efficient alternative to a full leg extension machine. Covers quad isolation, knee strengthening and core training in a 646mm × 1110mm footprint
- Rehabilitation & injury recovery — controlled range of motion with adjustable lockout positions makes it ideal for patellar tendon rehab, post-ACL quad activation and knee joint strengthening protocols
- CrossFit & functional athletes — develops the quad strength and knee stability needed to support heavy squats, Olympic lifts and high-rep leg training without the spinal load of barbell squats
- Schools & corporate gyms — safe, guided movement machine suitable for beginner to advanced users with no spotter required and minimal injury risk when used correctly
Pros & Cons
✓ Pros
- Targets all 4 quadriceps heads including the rectus femoris — the most under-developed quad muscle in standard training
- Dual-purpose: complete sissy squat station + ab crunch and sit-up station
- Fully adjustable calf pads and back pad — fits all user heights
- 250kg weight capacity — suitable for all athlete sizes
- Commercial heavy-gauge 50×75×3mm steel frame
- Compact 646mm × 1110mm footprint — fits where leg machines cannot
- No spinal load — suitable for users avoiding barbell squats due to back issues
- On display at Milperra showroom — test before you buy
✗ Cons
- 6-month warranty on upholstery and grips only — frame warranty period should be confirmed with us before purchase
- Isolation machine only — not a replacement for compound leg training (pair with a rack or functional trainer for full lower body programming)
- 30kg sissy squats require strong knee tendons — beginners should start bodyweight only and progress slowly
- Not suitable for outdoor or uncovered environments
Full Specifications
| Machine Type | Commercial Sissy Squat Machine — Quad Isolation + Ab Training Station |
| Dimensions | 646mm (W) × 1110mm (L) × 520mm (H) |
| Frame | 50×75×3mm and 50×50×3mm heavy-gauge steel tubing |
| Weight Capacity | 250kg |
| Machine Weight | 32kg |
| Finish | High-quality electrostatic metallic black powder coat — commercial scratch-resistant |
| Adjustments | Adjustable calf pads · Adjustable back pad position · Dual lockout positions |
| Cushions | High-density foam covered in anti-slip leather upholstery |
| Footplate | Large anti-slip non-slip footplate with high-density PVC foot guards |
| Grips | Non-absorbing PVC compound retained with aluminium collars |
| Muscles Targeted | All 4 quadriceps heads · Glutes · Core · Hip flexors · Knee and hip joint stabilisers |
| Additional Function | Ab crunch and sit-up station (feet secured in footplate) |
| Warranty | 6 months on upholstery, grips and consumables — contact us for frame warranty details |
| Best For | Home gyms, PT studios, commercial gyms, schools, rehabilitation facilities |
| Delivery | Australia-wide freight — Sydney, Melbourne, Brisbane, Adelaide, Perth, Canberra |
On Display at Milperra
10/202 Milperra Road, Milperra NSW 2214 — test the adjustable pads, feel the footplate and perform a bodyweight rep before committing
📍 Get Directions
Showroom Hours
Mon–Fri 9am–5pm
Saturday 9am–1pm
Sunday: Closed
Our team can show you correct sissy squat technique and help with pad adjustments for your height
Contact Us
Call 1300 247 888
WhatsApp +61 412 029 000
Mon–Fri 9am–5pm · Sat 9am–1pm
Free Sydney PickupCollect from our Milperra NSW warehouse. Mon–Fri 9am–5pm · Sat 9am–1pm
Australia-Wide DeliveryFast tracked delivery to Sydney, Melbourne, Brisbane, Adelaide, Perth, Canberra and all regional areas
Depot PickupMelbourne · Brisbane · Adelaide · Canberra — contact us to arrange depot collection in your state
Frequently Bought With Sissy Squat Machines
🏗 Functional Trainers & Smith Machines →
🔩 Power Racks & Squat Racks →
🪟 Rubber Gym Flooring Tiles →
🪑 Adjustable Weight Benches →
Frequently Asked Questions
Commercial Sissy Squat Machine — FAQ
A sissy squat machine is a dedicated quad isolation station that supports the user during the sissy squat movement — a knee-dominant exercise where the body leans backward with knees bending forward, creating an intense stretch and contraction across all four heads of the quadriceps. Unlike a standard squat where the hips hinge backward and the glutes and hamstrings share the load, the sissy squat places near 100% of the load on the quadriceps — particularly the rectus femoris and vastus medialis (tear-drop). The machine provides a stable calf pad, adjustable back support and a secure footplate so the movement can be performed safely with full control and range of motion.
The sissy squat machine primarily targets all 4 heads of the quadriceps: the rectus femoris (the only quad head that crosses both the knee and hip), vastus lateralis (outer quad), vastus medialis (tear-drop inner quad) and vastus intermedius (deep central quad). Secondary muscles engaged include the glutes through hip extension, the deep core stabilisers and hip flexors throughout the movement, and the knee and hip joint structures which are progressively strengthened under controlled load. The ab crunch function additionally targets the rectus abdominis and obliques directly.
Yes, with the correct approach. The machine's dual lockout positions allow beginners to limit the range of motion to a partial sissy squat while building quad and knee joint strength progressively. Beginners should start with bodyweight only — no added weight — and focus on controlled movement with a slow descent. The adjustable calf and back pads accommodate different body proportions, and the stable frame prevents the balance challenges of unassisted floor-based sissy squats. Progress to a full range of motion before adding any external resistance.
Unassisted floor sissy squats require significant ankle flexibility, balance and body awareness that most people do not have without training. The machine solves all three: the calf pad provides the ankle stability needed to maintain the backward lean, the back pad provides the balance reference point, and the footplate prevents foot slipping. This means you can focus entirely on the quad contraction and movement pattern rather than fighting balance and grip — allowing you to train through a deeper, more productive range of motion from your very first session.
Yes — this is one of the key advantages of this machine. Lock your feet into the footplate, lay back, and perform ab crunches, sit-ups and Russian twists with your feet fully secured. This creates a decline crunch position that places maximum tension on the rectus abdominis throughout the full range of motion — significantly more effective than floor crunches where the feet are unsecured. You can also add a weight plate on your chest to increase resistance. This dual function means the machine delivers both leg isolation and core training value in a single compact piece of equipment.
The sissy squat machine can be used as part of a structured knee rehabilitation protocol, particularly for patellar tendon strengthening and post-ACL quad activation, when used under the guidance of a physiotherapist or sports medicine practitioner. The adjustable lockout positions allow range of motion to be limited to a pain-free zone. However, people with existing knee injuries should consult their physiotherapist before using this machine. The sissy squat creates significant patellar tendon load — which is precisely what makes it effective for quad development and knee strengthening, but requires careful progression for injured knees.
Both target the quadriceps but in fundamentally different ways. A leg extension machine isolates the quads in a seated, open-chain movement that primarily trains the muscle in a shortened position. The sissy squat machine trains the quads through a closed-chain movement that includes a deep stretch of the rectus femoris — the quad head a seated leg extension cannot fully load. Research suggests that training muscles through a full range including the stretched position produces greater hypertrophy. The sissy squat also engages the core and builds functional knee joint stability that a seated leg extension does not. For complete quad development, the two machines complement each other rather than compete.
Yes — the Commercial Sissy Squat Machine is on display at our Milperra NSW showroom at 10/202 Milperra Road, Milperra NSW 2214. Mon–Fri 9am–5pm, Sat 9am–1pm. Test the pad adjustments for your height, feel the footplate stability and perform a bodyweight rep before committing. Our team is available to show correct sissy squat technique and help you assess whether this machine is the right fit for your training goals and space. Call 1300 247 888 if you have questions before visiting.
Yes. We deliver to all Australian states and territories — Sydney, Melbourne, Brisbane, Adelaide, Perth, Canberra and all regional areas. Free pickup is available from our Milperra NSW warehouse (Mon–Fri 9am–5pm, Sat 9am–1pm). Depot pickup is available in Melbourne, Brisbane, Adelaide and Canberra. Call 1300 247 888 or WhatsApp +61 412 029 000 for a delivery quote to your postcode.
Commercial Sissy Squat Machine — Delivery Areas Australia:
Sydney (NSW) · Parramatta · Penrith · Blacktown · Liverpool · Campbelltown · Bankstown · Eastern Suburbs · Northern Beaches · Inner West · North Shore · Western Sydney · Sutherland Shire · Castle Hill · Wollongong · Newcastle · Melbourne (VIC) · Richmond · Brunswick · Essendon · Geelong · Brisbane (QLD) · Gold Coast · Sunshine Coast · Ipswich · Adelaide (SA) · Norwood · Glenelg · Perth (WA) · Canberra (ACT) · Hobart (TAS) · Darwin (NT) · All Regional Australia
Sydney (NSW) · Parramatta · Penrith · Blacktown · Liverpool · Campbelltown · Bankstown · Eastern Suburbs · Northern Beaches · Inner West · North Shore · Western Sydney · Sutherland Shire · Castle Hill · Wollongong · Newcastle · Melbourne (VIC) · Richmond · Brunswick · Essendon · Geelong · Brisbane (QLD) · Gold Coast · Sunshine Coast · Ipswich · Adelaide (SA) · Norwood · Glenelg · Perth (WA) · Canberra (ACT) · Hobart (TAS) · Darwin (NT) · All Regional Australia
