Wheels Manufacturing Derailleur Hanger - 443 MFPN=MR-21-4-123-K Internal compression easily applies pressure

Internal compression easily applies pressure to secure headset during installation

Width 68/73mm BB Interface PF30 Spindle Type 30mm Length Cup Material Alloy Weight Cup Type Cup OD/Bearing OD Color Black Cross

Made of super high tensile spring steel

} 6061 T6 double butted aluminum alloy flat bar

Wheels Manufacturing Derailleur Hanger - 443 MFPN=MR-21-4-123-K Internal compression easily applies pressureWheels Manufacturing Derailleur Hanger 443. 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. These