then you'll need a new Freehub body

a number of SRAM® triggers and RockShox PushLoc controls)

Short sleeves for this shirt

Vibram Megagrip ISR rubber outsole for maximum grip

If you're switching from SRAM to Shimano

TLD D3 Cheek Pads PDP|Colour then you'll need a newReplace those lost or crusty old cheekpads, or adjust the sizing with these replacement cheek pads for the Troy Lee Designs D3 helmet. The D3 comes in two shell sizes and three EPS sizes. The cheek pads and headliners can be interchanged within the same EPS size to fine tune the fit. (see the sizing chart for more info) If you're not sure which EPS size your helmet has it should be printed inside the helmet and visible when the headliner and cheek