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Ships within 48 hours · Estimated delivery Sep 11 - Sep 16
Slimmer body with improved ergonomics
Tubular Steel Rails
2 firmly holds any bike without clamping the frame or seat post by supporting the bottom bracket then locking either the front or rear dropouts
Ultra-grip TPE rubber nose pads and tips
GRX Di2 RD-RX815 2x11 Spd. Ultegra Di2 Slimmer body with improved ergonomicsSHIMANO GRX DI2 Rear Derailleur SHIMANO SHADOW RD+ 34T max low sprocket 11 speed With an integrated chain stabilizer 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 and ON OFF switch for the chain tensioner. The RD RX815 DI2 version offers the digital precision of SHIMANO electronic shifting and synchronized shifting. and is
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