Wheels Manufacturing Derailleur Hanger 391 MFPN=HSA-IB42AOOX-S 4" compound 3C MaxxGrip bead

4" compound 3C MaxxGrip bead folding type tubeless color black weight 1225g

Two sizes (XS-S and M-XL) for ideal fit

Torsion Cap Construction: Enhanced durability and targeted flex characteristics for versatile performance

Bayonet Lock

The Sturmey Archer hub automatically changes from low to high gear at approximately 7 mph

Wheels Manufacturing Derailleur Hanger 391 MFPN=HSA-IB42AOOX-S 4" compound 3C MaxxGrip beadWheels Manufacturing Derailleur Hanger 391. Wheels 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