Description
Will this work?
- Shimano Ultegra 9-speed, long cage (GS) rear derailleur
- Designed for triple cranksets — 37t total chain capacity
- Max rear cog: 27t rated (commonly runs to 30t)
- Compatible with 9-speed Shimano STI road shifters
- Standard derailleur hanger mount — fits all road frames with standard hanger
- Includes all original hardware, ready to install
Condition: Very good. Body shows scuffs below the branding label. Cage and pulleys are excellent. Springs are tight, action is smooth.
Notes from MyBikeThing: The RD-6500 is one of the most trusted 9-speed road derailleurs ever made — mid-2000s Ultegra quality that still shifts cleanly decades later. The long cage version is the one to have if you’re running a triple up front or want the flexibility to run a wider cassette out back. These are getting harder to find in this kind of shape.
Workshop Wisdom: When installing, route the cable before mounting the derailleur to the hanger — it’s much easier to thread the cable end through the pinch bolt with the derailleur off the bike. Set your B-screw gap first (1mm clearance to the largest cog), then dial in the limit screws before tensioning the cable.
Guarantee: You put in the miles, we put in the work! 30-day Guarantee, rest assured of fit, function and condition. 🙂
Keywords: Shimano Ultegra, RD-6500, GS, long cage, rear derailleur, 9-speed, triple, road bike, silver, touring derailleur, 9s, STI compatible









