Hope pro 2evopro 4 os spacer kitthis os spacer kit will adapt your 15x100mm pro 2 pro 2 evo or pro 4 front hub to fit 15x110mm boost forks and works exclusively with the sramrockshox torque cap interface these caps will ensure youll enjoy quicker and simpler wheel fitting and the stiffest and most responsive steering out there features converts standard hope pro 2 pro 2 evo or pro 4 100mm hub to a sram torque cap15mm axle boost 110mm compatible with rockshox forks with torque ca