The TANK Weight Horn Kit allows users to add weight to the Standard M4 model. This allows more serious athletes to do sprinting exercises.
Sold as a set of two weight horns, they each mount directly to the frame. Weight horns are 8.1 in (200 mm) tall and are nylon covered solid steel. They bolt to the frame using existing hardware.
Comes standard on M2 models. Purchased separately to be used with the standard M4 model (XTTM4-PH) and M4GT (XTTM4GT-PH).