Ultegra ST-R8150 Di2 Dual Control Shift/Brake Lever Set for Rim Brakes - Left and Right, 2x12-Speed, Black protective gear Flip chip geo adjust

Flip chip geo adjust

isn't useful in a 'cross race if it isn't compliant

or grind up a giant back country peak

Increases the positive spring volume by 1

lightest and most supple XC race construction

Ultegra ST-R8150 Di2 Dual Control Shift/Brake Lever Set for Rim Brakes - Left and Right, 2x12-Speed, Black protective gear Flip chip geo adjustShimano Ultegra ST R8150 levers combine the accuracy of Shimano 12 speed Di2 shifting with the light weight of rim brakes. Quick and intuitive shifting Clearly defined click feeling with ergonomic shifting lever Better bike control and confidence in race conditions Hood shape and texture optimize grip and brake power transmission