Primal Performance Series 125kg Pin-Select - Prone Leg Curl

The Primal Performance Series Prone Leg Curl is a commercial pin loaded hamstring machine where the user lies face down and curls the heels toward the glutes against a 125 kg weight stack. It sits on a compact 980 × 1240 mm footprint, stands 1620 mm tall and weighs 250 kg, which suits PT studios and commercial leg lines.

Lying prone lets the hips extend fully, so the hamstrings work from a long stretch. Dual hinge calf and knee adjusters line the pivot up with each user's knee, which keeps the pad in the right spot on the lower leg from rep one.

Who it is for

• Commercial gyms building out a selectorised leg line
• PT studios that want a classic lying curl for hamstring isolation
• Sports and S&C facilities running hamstring strength and injury prevention work
• Physio led and rehab programs that need a fixed path knee flexion exercise with light starting loads

Key features

• Dual hinge calf and knee adjusters so the axis matches each user's knee and the roller sits correctly on the lower leg
• 125 kg pin select stack for quick load changes between sets and users
• Gas sprung adjustments for smooth, fast setup
• 3 mm laser cut steel frame with an electro powder coated matte black finish
• Urethane injection moulded pads with double stitched covers that can be customised
• 1000 kg rated cables and a laser cut steel shroud around the stack
• Matches the other machines in the 12 piece Primal Performance Series pin loaded range

Muscles worked and programming ideas

The prone position trains knee flexion with the hips extended, which puts the hamstrings under load from a lengthened start.

• Primary: hamstrings (biceps femoris, semitendinosus, semimembranosus)
• Secondary: calves (gastrocnemius) as a knee flexor
• Eccentric focused sets, lowering slowly to build hamstring resilience for running and field sports
• Pairing with a leg extension to balance quad and hamstring strength
• Higher rep finishers after squats or deadlifts

Specifications

Frequently asked questions

How much room does the Prone Leg Curl take up?

It measures 980 mm by 1240 mm and 1620 mm high. Leave about 600 mm clear on each side so users can climb on and off, which means planning for an area of roughly 2.2 × 2.4 m.

How is the resistance set?

It runs on a 125 kg pin select stack. Move the pin to change the load, with no plates involved.

Will it fit under a normal ceiling?

Yes. The frame is 1620 mm high and the user lies close to the pad, so nothing travels overhead. A standard 2.4 m ceiling is plenty.

What warranty applies?

Primal Strength states a full commercial use warranty of 5 years on the frame, 3 years on parts, and 1 year on pads, cables, pulleys and wearables, plus 1 year labour.

Can you deliver and install it in Australia?

Yes. We ship Australia-wide from our Melbourne warehouse, and most metro deliveries arrive 1 to 7 business days after dispatch. Packed, this machine weighs 310 kg, so some regional addresses need a freight quote. Use the Ask about this machine form on this page and we will quote delivery and installation for your site.

Prone or seated leg curl: which should I choose?

Both train the hamstrings through knee flexion. The prone curl works them with the hips straight, while a seated curl works them with the hips bent and the muscle more stretched. Many gyms run one of each; if you only have room for one, a seated curl is easier for beginners to get on and off.

Pair the Prone Leg Curl with the Primal Leg Extension and Seated Hamstring Curl for a complete selectorised leg line.