Shimano ST-R8170 STI Shift-Brake Di2 Lever Side:Left Spindle compatibility: 24 mm Hollowtech

Spindle compatibility: 24 mm Hollowtech II

Perfect for sportives

Frame & Fork: Advanced-grade composite frame and full-composite OverDrive steerer for lightweight strength and precise handling

Designed for seamless integration with MIK-compatible accessories

titanium bolts

Shimano ST-R8170 STI Shift-Brake Di2 Lever Side:Left Spindle compatibility: 24 mm HollowtechThe Shimano ST R8170 Di2 Shift Brake Lever delivers fast, wireless electronic shifting and powerful hydraulic braking in a sleek, ergonomic design built for the Ultegra R8100 series. Its refined hood shape, textured surfaces, and responsive Servo Wave brake feel provide superior comfort and control, while the wireless Di2 interface keeps your cockpit clean and shifting nearly instantaneous. Perfect for performance focused riders, it offers