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Adjustable extension for personalized fit
improved mud clearing
Elastomer bumpers
Available in X-Large only
Leather palm and thumb are soft and durable
Shimano GRX RD-RX817 Rear Derailleur 11-Speed Long Cage Di2 1x Black Default:Default Adjustable extension for personalized fitProduct Description The Shimano GRX RD RX817 rear derailleur is a premium 11 speed Di2 gravel derailleur built for smooth, reliable shifting across mixed surfaces. Designed specifically for 1x GRX drivetrains, it uses Shimanos electronic Di2 platform and a gravel tuned clutch to improve chain stability and shifting confidence on rough terrain. With long cage capacity and support for cassettes up to 42T, it is a strong replacement or upgrade option for
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