Shimano Dura-Ace Di2 ST-R9270 12 Speed Shifter + Flat Mount Caliper Size:Front Brake - Right Hand compatible with 1x12 or 2x12-speed

compatible with 1x12 or 2x12-speed eTap AXS setups

Side pocket at leg

This shim to allows smaller diameter seatposts to fit larger diameter seat tubes

Low sprocket - Min

Compatible with Shimano Di2 RS910 electrical distributor

Shimano Dura-Ace Di2 ST-R9270 12 Speed Shifter + Flat Mount Caliper Size:Front Brake - Right Hand compatible with 1x12 or 2x12-speedThe Ultimate Shimano Road Performance Experience Take your road bike build to the highest level with the Shimano Dura Ace Di2 ST R9270 12 Speed Shifter and Flat Mount Caliper, combining Shimanos flagship electronic shifting technology with powerful hydraulic disc braking performance. Designed for professional racing and the most demanding performance riders, the Dura Ace R9270 Di2 system delivers lightning fast shifting, refined ergonomics,