9 speed derailleur compatibility
07-18-20, 05:56 PM
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9 speed derailleur compatibility
I'm replacing an Shimano Ultegra RD-6500 SS rear derailleur. I understand Ultegras are all 11-speed now, but I'm not looking to replace the whole drivetrain right now. With that in mind, I'm trying to decide which is my best option:
Can anyone shed some light on which option is preferable? Or any other 9-speed compatible options I'm overlooking?
- Used Dura-Ace RD-7700, which as I understand it is the last version they made for 9-speed.
- New Sora RD-R3000, which as far as I can tell is the best current generation model that Shimano makes in 9-speed.
- Used Ultegra RD-6500, just replace with the exact same part.
Can anyone shed some light on which option is preferable? Or any other 9-speed compatible options I'm overlooking?
07-18-20, 06:16 PM
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10 speed road RD is compatible as well
07-18-20, 06:46 PM
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07-18-20, 06:54 PM
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07-18-20, 11:33 PM
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07-18-20, 11:40 PM
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I'm replacing an Shimano Ultegra RD-6500 SS rear derailleur. I understand Ultegras are all 11-speed now, but I'm not looking to replace the whole drivetrain right now. With that in mind, I'm trying to decide which is my best option:
- Used Dura-Ace RD-7700, which as I understand it is the last version they made for 9-speed.
- New Sora RD-R3000, which as far as I can tell is the best current generation model that Shimano makes in 9-speed.
- Used Ultegra RD-6500, just replace with the exact same part.
Don't forget that Shimano's 9-speed mountain bike derailleurs are also compatible with Shimano's 9-speed road shifters.
07-19-20, 05:51 AM
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I'd start with Ebay
07-19-20, 08:12 AM
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Use this chart. Look under the "Pull Ratio" column and find anything with a 1.7 ratio and it will work with your 9 speed as long as the cage length is what you need for your gearing setup. https://docs.google.com/spreadsheets...#gid=847158527
07-19-20, 08:59 AM
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Use this chart. Look under the "Pull Ratio" column and find anything with a 1.7 ratio and it will work with your 9 speed as long as the cage length is what you need for your gearing setup. https://docs.google.com/spreadsheets...#gid=847158527
07-19-20, 09:00 AM
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What is your derailleur doing currently that you don't like? Everything has a service life but, honestly, I think that derailleurs are generally one of the most reliable components on the entire bike.
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07-19-20, 09:02 AM
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Well I can't take credit for the spreadsheet as it was posted/created by another BF member (can't remember who) awhile back but yes, it sure is useful. Also at the very bottom of the webpage there are some other charts for speed calc, cranksets, etc.
Last edited by Crankycrank; 07-19-20 at 09:08 AM.
07-19-20, 10:38 AM
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I replaced a short cage 105 with Sora RD-3000 medium cage to run 11/36 with 39/48 on my cross bike acting as road bike. Shifts smooth and quick.
