Wheels Manufacturing Derailleur Hanger 337 MFPN=RS4000 External 68mm BSA BB Included

External 68mm BSA BB Included

J-Bend spoke interface

Maxiumum tire pressure 100 psi

In the case of the Firebird

Provides clearance for larger tires up to 32mm

Wheels Manufacturing Derailleur Hanger 337 MFPN=RS4000 External 68mm BSA BB IncludedWheels Manufacturing Derailleur Hanger 337. 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