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Ships within 48 hours · Estimated delivery Aug 15 - Aug 20
Power Glass™ solar charging extends battery life up to 42 minutes per hour in battery saver mode
and personalization
seamlessly blending advanced technology
SyncDrive motor technology smooths out bumps along the ride
Shimano RD-R8150 Ultegra Di2 12-Speed Rear Derailleur trinity Power Glass™ solar charging extendsNow simplified with a single derailleur cage length, the new 12 speed Shimano ULTEGRA R8150 rear derailleur packs our fastest, most precise shifting into a more approachable option. With our fastest, most accurate shifting, the new 12 speed ULTEGRA R8150 rear derailleur is more versatile than ever thanks to a single cage length option that is compatible with 28 34T low sprockets.