This spacer is positioned between the bearings of front Centerlock E-sync hubs made for 110mm Boost axle spacing. Not compatible with 6-bolt or 100mm (non-Boost) E-sync hubs. Not compatible 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.
