The eccentric caliper mount is designed to work with the Eric's Eccentric Disc ENO. The eccentric disc hub moves in an elliptical arc tensioning the chain. When running a disc brake the brake rotor moves in the same elliptical arc as the hub which creates a problem with the caliper / rotor interface. The eccentric mount replaces the caliper frame mount allowing the disc brake caliper to rotate in the same elliptical arc as the hub. The adaptor should work with post mount Hayes, Avid, and Shimano brakes. The original caliper frame mount will need to be unbolted from the caliper and replaced with the eccentric mount. The adaptor will NOT work with all disc brakes. Made in USA.
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