Shimano Ultegra Di2 ST-R8170 12 Speed Shifter + Flat Mount Caliper SW Only We worked closely with Jamie

We worked closely with Jamie from skingrowsback to develop this weight weenie version of the popular Plan B Micron saddle bag

BEFORE: A beneficial level of caffeine can be reached by consuming around 200 mg prior to

Drivetrain Speeds: 12

The new Chorus groupset is fully compatible with the cassettes launched with the Super Record and Record 2x12-speed groupsets (11-29 and 11-32) and it introduces a new cassette specification (11-34) only compatible with our Chorus 12s drivetran

Shimano Ultegra Di2 ST-R8170 12 Speed Shifter + Flat Mount Caliper SW Only We worked closely with JamieRoad riding has never been this much fun. The redesigned Shimano Ultegra Di2 ST R8170 12 Speed Shifter and Flat Mount Caliper has all new ergonomics, even more precise brake modulation and wireless electronic shifting, letting you focus on the next sprint, the next descent, or the next joke from your riding partner. Shimano's ULTEGRA ST R8170 brake levers bring enhanced modulation and control to every ride using Shimano's proven SERVO WAVE technology.