This pair of front end caps is designed to fit 6-bolt E-sync OS and Neo OS hubs when used with 20mm Boost axles. The end caps feature a low-friction U-cup seal that snaps into place and stays secure even when your wheel is removed from your bike. DH forks went through a change in disc brake caliper position in 2019, creating a new 20mm Boost fork spacing that differs slightly from previous 20mm designs. More information about the difference between 20mm and 20mm Boost here. Not compatible with Centerlock or non-OS hubs. Not compatible with M-pulse hubs.
E-sync hubs are built to last, including under the higher torque and weight of eBikes. A 6066 alloy shell, heat-treated steel ratchet ring, reinforced pawls, and full Enduro bearings rovide brute strength, while 8.18° engagement provides the speed.
