Pin Loaded Leg Extension The BLK BOX Selectorised Leg Extension Machine delivers adjustable, commercial-grade quad training for gyms, performance centres and rehab facilities. Shop Now.

The Selectorised Leg Extension is engineered to isolate and strengthen the quadriceps with smooth, controlled resistance and user-friendly adjustability. Designed for commercial gyms, performance facilities, rehabilitation clinics and strength training environments, it delivers consistent biomechanics for athletes of all abilities.

Featuring a 133.5 kg weight stack with a 7.5 kg top plate and 14 x 9 kg weight plates, users can make precise resistance adjustments to suit everything from rehabilitation protocols to heavy strength work. Every adjustment is secured using intuitive pull-pin locking systems, making setup quick, safe and reliable between users.

With 6 work arm positions, 7 ankle pad positions, and 6 seat positions, the machine accommodates a wide range of body sizes while allowing users to a