The Cybex Classic Leg Extension uses a smooth cable-driven system to isolate and strengthen the quadriceps. Adjustable tibia and back pads ensure precise alignment, while integrated seat handles and a custom belt keep you locked in for maximum contraction. A variable-resistance cam lets you fine-tune the strength curve. changing where peak tension occurs within the movement. Precision-engineered for controlled, consistent resistance, this machine remains a timeless staple for targeted quad development.