Shimano Rear Derailer, RD-M370 Altus 9-speed

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9-speed long-cage derailer, compatible with most shifters, including friction
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Position Rear
Attachment Direct
Speeds 9
Compatibility All 9-speed

This traditionally-shaped rear derailer is a solid, affordable choice that will work on almost all transmissions. It's particularly well-suited for friction shifters due to its older-style cable attachment dimensions. If indexing, use with a 9-speed shifter and 9-speed cassette.

  • Cage: SGS (long)
  • Total capacity: 45 teeth
  • Max front difference: 22 teeth
  • Includes cable adjuster
  • Conventional direct attachment
  • Max low gear sprocket: 34-teeth (unofficially this works with 36t if you're using a double crank)
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