Shimano Ultegra ST-R8170F Di2 Shift/Brake Lever BR-R8170 Hydraulic Disc Brake Caliper - Left/Front 2x Flat Mount BLK CheckoutTitle=Hayes Dominion T2 Two Piston Disc Brake model Southpaw 22

model Southpaw 22

MatchMaker X compatible

Extended limits due to greater stability

Aluminum lever blade utilizes Shimano’s tried and true forging process

Shimano Ultegra ST-R8170F Di2 Shift/Brake Lever BR-R8170 Hydraulic Disc Brake Caliper - Left/Front 2x Flat Mount BLK CheckoutTitle=Hayes Dominion T2 Two Piston Disc Brake model Southpaw 22Your time on the bike is precious let Shimano make it even better. Ultegra ST R8170 brake levers bring enhanced modulation and control to every ride by employing Shimano's proven SERVO WAVE technology. The Di2 platform untethers the shifters while delivering fast and reliable wireless shifting. The BR R8170 hydraulic 2 piston disc brake caliper brings a new level of control to the road cycling world with improved modulation and a quicker initial