Shimano Ultegra RD-R8150 Di2 - 12-Speed Rear Derailleur Brakes Fly up climbs and across

Fly up climbs and across flats with ultralight build details like a SRAM RED 1x12 drivetrain

Replacement hardware for the Range Boost system

The details are completed by a neat mud flap to protect the rear shock plus tidy cable routing within the frame and swingarm

Note: standard Guide / G2 (R

the AMPP900 is ready for years of reliable night and day riding

Shimano Ultegra RD-R8150 Di2 - 12-Speed Rear Derailleur Brakes Fly up climbs and acrossShimano Ultegra RD R8150 Di2 12 Speed Rear Derailleur The Shimano Ultegra RD R8150 is the Di2 electronic rear derailleur from the R8100 groupset delivering instant, flawless 12 speed shifting with the speed and precision that has made Di2 the benchmark for electronic drivetrains. Every shift lands perfectly, every time, whether you're sprinting for a sign or grinding up a long climb in the wet. Semi wireless Di2 architecture means clean, fast setup,