Shimano GRX RD-RX815 Rear Derailleur - 11-Speed Long Cage BLK With Clutch Di2 For 1x 2x MFPN=16277 CNC machined 7075-T6 aluminum provides

CNC machined 7075-T6 aluminum provides the perfect blend of lightweight and strength

we added a single lightweight Boa® IP1 dial that features tool-free snap replacement capability

}Shimano ES51 68 x 121mm Octalink V2 Spline English Bottom Bracket

The Comp version of Ritchey's XC pedal with fixed front claw dual-sided entry and excellent mud-shedding characteristics

and integrated barrel adjuster

Shimano GRX RD-RX815 Rear Derailleur - 11-Speed Long Cage BLK With Clutch Di2 For 1x 2x MFPN=16277 CNC machined 7075-T6 aluminum providesShimano GRX RD RX815 Rear Derailleur 11 Speed Long Cage Black With Clutch Di2 For 1x and 2x. GRX RD RX815 Di2 Rear DerailleurOperates with Shimano Di2 for digital electronic shifting Gravel tuned clutch tension provides smooth and reliable mixed surface shifting TECH SPECS Rear Derailleur Mount Type Shimano Rear Direct Mount Rear Derailleur Mount Type 10x1 Standard Rear Der Shifter Compatibility Shimano Road Di2 Cage Length Long Drivetrain Speeds 11