Shimano Rear Derailer, RD-M370 Altus 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)