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Air Core HM Carbon
DO NOT OVERTIGHTEN
CE 1621-1 certified to ensure outstanding protection
– Low weight and compact size
Ski Base: World Cup Pro + 100% Mohair
Wheels Manufacturing Derailleur Hanger 391 MFPN=DROPOUT-648 Air Core HM CarbonWheels 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
