Shimano Ultegra R8170 12sp Di2 Shifter + Caliper Choose:Rear (New UPC) - Fastens securely to the

- Fastens securely to the top tube

and industry-leading versatility

6 T-25 bolts included

Robust Protection: Engineered for safety

Versatile endurance wheelset for the modern road bike with tubeless and hookless rim profile

Shimano Ultegra R8170 12sp Di2 Shifter + Caliper Choose:Rear (New UPC) - Fastens securely to theRoad riding has never been this much fun. That's because the redesigned ULTEGRA ST R8170 DUAL CONTROL LEVERS have all new ergonomics, even more precise brake modulation, and wireless electronic shifting. This trifecta lets you focus on the next sprint, the next descent, or the next joke from your riding partner. Shimano's new ULTEGRA ST R8170 brake levers bring enhanced modulation and control to every ride by employing Shimano's proven SERVO WAVE