Foot bumper is used at the rear left and right of the treadmill. This is the foot of the treadmill that sits on the ground. Each unit requires two.

Foot bumper can be used on following models: 450, 450P, 450HRC, 500, 500P, 500HRC, 600, 350P, 350HRC, 700, 725, 750, 750CI, 825ZTX, and 850ZTX.