HD Adder Pin

The HD adder pin can be used to add an additional 300lbs of plate weight to HD1 & HD2 series weight stacks.

The HD adder pin can be used with the BX2 if you do not install the small black beauty covers on the outside of the BX2. There are some plate size limitations when using on the BX2. 5lb, 10lb and 25lb regular Olympic plates work along with some 35lb plates. 45lb plates and bumper plates do not fit because of the compact smith machine design that pushes the weight stacks closer to the rear plate storage.