Shimano Dura-Ace Di2 ST-R9250 12 Speed Shifter Set (Rim Brake) GRAVEL The wheel structure enables reducing

The wheel structure enables reducing energy dissipation

12-tooth pulley wheels

Stem clamp diameter: 31

Optimized Tire Sizes: 33-45c

THRU AXLE COMPATIBILITY: 12x100

Shimano Dura-Ace Di2 ST-R9250 12 Speed Shifter Set (Rim Brake) GRAVEL The wheel structure enables reducingOur finest rim brake DUAL CONTROL LEVERS, DURA ACE ST R9250 offer 12 speed shifting with refined ergonomics and exceptionally light weight. DURA ACE ST R9250 DUAL CONTROL LEVERS are the ultimate in reliable performance thanks to a wired connection and the light weight of rim brakes. Refined ergonomics and advanced materials show the race pedigree of these levers. Features Quick and intuitive shifting Clearly defined click feeling with ergonomic shift