This seal is positioned between the freehub and hub shell on all E-sync hubs. It is designed for a precise fit that prevents dirt and other contaminants from entereing the hub so the hub internals keep working smoothly. This seal is compatible with all E-sync hubs. Not compatible with M-pulse, Neo, or Neo Ultimate freehubs, but can be used in conjunction with E-sync freehub as a retrofit upgrade to Neo and Neo Ultimate 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.
