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precision bearing for lightweight hub performance
- Slender profile looks great on steel bikes
RC2808 HB4137
145904-Q7-L31EE04
GS200320 HT5935 670360-03
microSHIFT M21 Rear Derailleur - 6,7 Speed, Long Cage, Black Knives & Cutting Tools precision bearing for lightweight hubM21 rear derailleurs are designed to work with 6 and 7 speed Shimano road and mountain shifters. Enjoy the wide variety of bikes you can get going again with M21 rear derailleurs. Robust composite and steel construction Compatible with Shimano 6 and 7 speed mountain and road systems Product Specifics Rear Derailleur Mount Type: 10x1 Standard Rear Der Shifter Compatibility: Shimano Mountain Cage Length: Long Drivetrain Speeds: 6 Drivetrain Speeds: 7
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