Shimano GRX DI2 RD-RX815 Long Cage 11-Speed Rear Derailleur closeout Defy (alloy) - 2009-2016

Defy (alloy) - 2009-2016

Front and rear holders secure the phone and keeps steady even while going downhill

the ADVENT X cassette allows riders to shift less often to find the right gear

Replacement bicycle fixation strap for older Yakima rear mount bike racks

A rigid bead all-around

Shimano GRX DI2 RD-RX815 Long Cage 11-Speed Rear Derailleur closeout Defy (alloy) - 2009-2016SHIMANO 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