This SRAM X0 front hub conversion cap set provides compatibility with both standard 15x100mm and 15x110mm Boost through-axle forks, plus includes the 31mm RockShox Torque Cap interface. Torque Caps increase the contact area between the hub and fork dropout, improving front-end stiffness and reducing wheel flex under hard cornering and braking loads — a noticeable improvement on RockShox Boost forks that support the standard.

All three axle configurations are covered in one kit, giving you flexibility to move your X0 front wheel between different fork standards without purchasing separate cap sets. Caps install and remove by hand with no tools required, and genuine SRAM construction ensures precise fitment and correct bearing preload.

SRAM part number: 00.1918.145.011