Shimano Ultegra BR-R8070 Rear Flat Mount Brake Caliper Bike Accessories Brand_Maxxis T20 chromoly rail with standard

T20 chromoly rail with standard round size of 7 mm

The OSPW System for SRAM fits up to 32-tooth cassettes

Chamois: TriAir

even on the most difficult curves

Groupset Includes:

Shimano Ultegra BR-R8070 Rear Flat Mount Brake Caliper Bike Accessories Brand_Maxxis T20 chromoly rail with standardDesigned to integrate seamlessly with a road bike's profileBetter heat dispersion than current road disc systems (SM RT800)Greater rider control in all conditionsFlat mount hydraulic typeHydraulic disc brake provides the next stage of controlNew construction provides better heat management than current ICE TECHNOLOGIES FREEZASleek integration into a road bike's aero profile SERIES Ultegra GENERATION Ultegra Di2 R8070 CALIPER MATERIAL Aluminum CABLE OR