RD-M3020-8 7/8-Speed Long-Cage Rear Derailleur
$26.49
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Fit illustrations show the part and omit branding.
RD-M3020-8 7/8-Speed Long-Cage Rear Derailleur
$26.49
Product highlights
- Rear drivetrain — Match the RD-M3020-8 to a compatible 7- or 8-speed indexed shifter.
- Threaded mounting — The derailleur bolts to a conventional threaded hanger.
- Largest rear sprocket — Check that your largest sprocket has between 30 and 40 teeth.
- Long cage and capacity — The SGS cage supports up to 45 teeth of total capacity.
- In the box — Includes one black RD-M3020-8 rear derailleur.
Rear 7 or 8 speed. Long cage. Threaded hanger mount.
Airuzara / Fit & use
Check space for the long cage
Compare the cage and cassette with your drivetrain before selecting the replacement.
Rear 7 or 8 speed. Long cage. Threaded hanger mount.
Context illustration
Fit checklist
Check before you order
Where does the mounting bolt go?
It threads into a compatible derailleur hanger on the frame. Compare the mount with your current part before ordering.
What should I compare besides the mount?
Match the rear shifter and cassette speeds, then check the rear sprocket size and drivetrain capacity listed below.
Full specifications and box contents
A long-cage rear derailleur for compatible 7- and 8-speed setups with a conventional threaded hanger.
Fit and specifications
- Model RD-M3020-8
- Rear speeds 7 or 8, with a matching indexed shifter
- Cage SGS long cage
- Mount Conventional threaded derailleur hanger
- Largest rear sprocket 30–40 teeth
- Total chain capacity 45 teeth
Check before you order
- Check the teeth on your largest rear sprocket and the overall drivetrain capacity.
- Match the derailleur hanger and rear shifter before ordering.
In the box
One black RD-M3020-8 rear derailleur.