Shimano
Ultegra 6700-A 10-Speed Rear Derailleur Pulley Set, ver.2
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Shimano rear derailleur pulley assembly Y5X998150 is the OEM updated pulleys for the Ultegra 6700-A rear derailleur and are the direct aftermarket replacements for the following derailleurs and feature a sealed bearing tension pulley:
- Ultegra RD-6770, RD-6700-A, RD-6700, RD-6600, RD-6500
- Saint RD-M810-A, RD-M810, RD-M806, RD-M805, RD-M801, RD-M800
- XT RD-M772, RD-M771, RD-M770, RD-M761, RD-M760, RD-M751, RD-M750
- XT Trekking RD-T780
- Nexave RD-C910
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Tree Fort ID: 333222417167
Customer Reviews

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A GuestThese are original to my M591 rear derailleur and they work well with it when the old one's needed replacing after 3000 miles. They last plenty, I might have gotten away with simply servicing the old ones but their teeth were noticeably worn enough to justify replacement, and the replacements are smooth and shift better.