Shimano 105 Di2 ST-R7170 / BR-R7170 Hydraulic Disc STI Shifter / Caliper - Right Select Option:Right Rear (1700mm) SRAM SX PG-1210 12 Speed

SRAM SX PG-1210 12 Speed Cassette - 11-50T

Built using a Mach1 CFX double wall rim

including aerodynamic hangers

the supple 180 tpi polyamde casing absorbs the shock and propels you forward

Genuine Corratec replacement part

Shimano 105 Di2 ST-R7170 / BR-R7170 Hydraulic Disc STI Shifter / Caliper - Right Select Option:Right Rear (1700mm) SRAM SX PG-1210 12 SpeedShimano 105 Di2 ST R7170 BR R7170 Hydraulic Disc STI Shifter Caliper Right Shimanos latest electronic Di2 105 shifters communicate wirelessly with the frames derailleur and battery system, making fitting easier and the front end cleaner. Although the levers are in exactly the same place as with the mechanical STI units, all that is needed to switch chainrings is a light press on the lever for an instant change. When a different sprocket is selected at