Shimano Sora RD-R3000 Rear Derailleur (Black) (9 Speed) (Medium Cage) (GS)

Shimano Sora RD-R3000 Rear Derailleur (Black) (9 Speed) (Medium Cage) (GS)
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Price: $51.99

Cage | Size:

  • Short Cage | SS
  • Medium Cage | GS
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The Shimano Sora RD-R3000 Rear Derailleur is a reliable and affordable 9-speed derailleur. Taking use of technology from previous higher end Shimano derailleur, the derailleur punches above its weight class when it comes to performance. Comes in short and medium cage sizes to work with a wide range of cassettes.


  • Compatible with Shimano 9-Speed STI levers
  • Fluoric coated link bushings
  • Aluminum bracket body
  • Painted finish
  • Stainless steel B-axle


Cage Length: Short (SS) or Medium (GS)
Chain Wrap Capacity (teeth): 37 (Short Cage), 43 (Medium Cage)
Drivetrain Speeds: 9
Largest Cog (teeth): 32T (Short Cage), 34 (Medium Cage)
Rear Der/Shifter Compatibility: Shimano Road
Rear Derailleur Mount Type: 10 x 1 Standard
Color: Black

This product was added to our catalog on March 10, 2017

Monday, Mar 22 2021 (6 months ago)
Shimano Sora RD-R3000 Rear Derailleur (Black) (9 Speed) (Short Cage) (SS)
Converted an old 52 x 39 front chain ring road bike with 11-27 cassette and 9 speed Ultegra derailleur using this SORA RD-3000 GS (Medium Cage) and a swap to a 12-32 cassette. No need for a compact 50 x 34 Compact crankset expense. New chain, new derailleur and new cassette and now I can climb with a 39x32=32.57 gear inch. Almost as good as the 34x27=33.63 gear inch. Can always go back to the old setup as well. Try it, you will like it! (The short cage SORA will not work, you need the Medium cage).