Wheels Mfg Derailleur Hanger Dropout #638 Cage-Medium BNS recommends use of optional

BNS recommends use of optional speed reducers and/or brake

Material: 3-2

use a 10-speed chain (shifts and works well on a 9-speed drivetrain and fits the ring tighter for better chain retention)

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Wheels Mfg Derailleur Hanger Dropout #638 Cage-Medium BNS recommends use of optionalMachined aluminum replacement derailleur hangers to fit a wide variety of frames For more updated info please visit https: wheelsmfg. com derailleur hanger tech help Made in USA TECH SPECS hanger # 638