Featuring a leak-free

For better crankarm compatibility

The PAS (Perineal Area System) is an open central channel designed to eliminate pressure peaks and numbness

including conductive rubber electrodes

Shimano Ultegra Di2 R-8170 Disc Groupset Di2 Featuring a leak-freeWe have 5 remaining groupsets in stock! Kit Includes: Shifters: Ultegra ST R8170 Di2 Disc brake Set, 2 x 12, J Kit direct. Wireless Brakes (Front and Fear): BR R8170 flat mount with Servo Wave. 10% wider pad clearance Rotors: RT MT800 or CL 800, 140 or 160mm Centerlock with Lockrings Crankset: FC R8100 Ultegra. Hollowtech II, 2 x 12 compatible Bottom Bracket: Shimano BBR60 Ultegra. BSA, Hollowtech II Rear Derailleur: RD 8150 Ultegra Di2, 12 speed.