This spacer is positioned between the bearings of front 6-bolt E-sync hubs made for 100mm (non-boost) axle spacing. Compatible with 9x100mm and 15x100mm axles. Not compatible with Centerlock or Boost 110mm E-sync 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.
