Shimano Ultegra Di2 ST-R8170 12 Speed Shifter + Flat Mount Caliper Size:Rear Brake - Left Hand Dual locking Presta/Schrader nozzle

Dual locking Presta/Schrader nozzle

When dealing with cassettes it is all a game of numbers and the Campagnolo 11 series has them all…a wide range of gearing keeps allows you to dial in the drivetrain to the course ahead

Replacement hardware for the ENVE carbon fiber 2-bolt seatpost

The round shape of the SCRATCH M5 allows the pelvis to rotate naturally

Digital tech intelligence

Shimano Ultegra Di2 ST-R8170 12 Speed Shifter + Flat Mount Caliper Size:Rear Brake - Left Hand Dual locking Presta/Schrader nozzleRoad riding has never been this much fun. The redesigned Shimano Ultegra Di2 ST R8170 12 Speed Shifter and Flat Mount Caliper has all new ergonomics, even more precise brake modulation and wireless electronic shifting, letting you focus on the next sprint, the next descent, or the next joke from your riding partner. Shimano's ULTEGRA ST R8170 brake levers bring enhanced modulation and control to every ride using Shimano's proven SERVO WAVE technology.