Shimano GRX DI2 RD-RX815 Long Cage 11-Speed Rear Derailleur wahoopromo In spirit of constantly improving

In spirit of constantly improving

The ICE TECHNOLOGIES FREEZA rotors dissipate heat to maintain braking performance on long downhill stretches

Road/MTB Approved

840D TPU laminated nylon

which means less rolling resistance and higher speeds

Shimano GRX DI2 RD-RX815 Long Cage 11-Speed Rear Derailleur wahoopromo In spirit of constantly improvingSHIMANO 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