Wheels Manufacturing Derailleur Hanger - 278 Frame Mount-30.0mm A steel notched spring retainer/collar

A steel notched spring retainer/collar should be used on all spring rates 550 lbs or greater

It's loaded with features like proven hollow dropouts integrated chain tensioners Wave down tube and top tube cable channel guide angled removable brake mounts "Director" style wishbone post-weld machining of the bottom bracket & headtube and full 41-Thermal post weld heat-treating throughout

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Finite Finish Base Structure Tool Press Rollers without gears

Wheels Manufacturing Derailleur Hanger - 278 Frame Mount-30.0mm A steel notched spring retainer/collarWheels Manufacturing hangers are stiffer than almost any OEM hanger which improves durability and shifting performance. OEM hangers are only produced by a handful of manufacturers mostly in Taiwan and China. As a result you will see many bikes with exactly the same hanger. Bicycle manufacturers may make mid year changes. Please use the hanger photos to select the proper hanger for your application. CNC machined 6061 aluminum Black anodized finish Made