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Reach adjustment and customized button functions allow you to dial in your ideal ergonomics
NEW Maxima Plush Dynamic Suspension Lube reduces friction
And despite its smaller construction
the heart of the bicycle
Shimano Gravel GRX RX815 Di2 2*11-Speed Rear Derailleur shift hydraulic lever caliper Reach adjustment and customized buttonRD RX815 Shimano GRX DI2 Rear Derailleur Shimano Shadow RD+ 34T max low sprocket 11 speed With an integrated chain stabiliser mechanism, the Shimano GRX derailleur provides a quieter experience and shifting security and precision on mixed terrain. For rides on smooth surfaces, the derailleur features an On Off switch for the chain tensioner. The RD RX815 DI2 version offers the digital precision of Shimano electronic shifting and synchronised shifting.
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