Shimano Dura-Ace Di2 ST-R9270 12 Speed Shifter + Flat Mount Caliper SCV The SRAM RED® 22 chain

The SRAM RED® 22 chain features more heavily chamfered outer plates for improved shifting and quieter running

Clutch lock – for easy wheel removal

Increased pedaling efficiency

The Fly Cage Poly is a cage for all disciplines and all conditions

Secret Chain Blend not only acts as a lubricant but actually acts to modify the surface of the chain

Shimano Dura-Ace Di2 ST-R9270 12 Speed Shifter + Flat Mount Caliper SCV The SRAM RED® 22 chainThe 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,