Drivetrain System (4)

Model: CS-R7101-12 Level: 105 Speed: 12 Speed Compatible chain: HG 12-speed Teeth: 11-34T (11-12-13-14-15-17-19-21-24-27-30-34T)     Weight: approx 360g Refined 12-step gear combination provides peak efficiency and accelerating performance for every...

Brand: Sram Level: SX EAGLE Speed: 12 Speed Links: 118 Links Inner link color: Brown Chain Connector: PowerLock Weight: approx 270g Easy install, PowerLock chain connector for a secure chain...

1, Crankset only 2, Crankset + BB: come with BB-RS500 or BB-RS501 BSA bottom bracket —————————————————————————— Model: FC-RS520 Color: Black Speed: 2×12 Speed Chainring: 50-34T  Feature: 2-PIECE CRANKSET Compatible chain:...

Option: 1, Crankset only 2, Crankset + BB: Come with SM-BBR60 bottom bracket (BSA) —————————————————————————— Model: FC-R7100 Level: 105 Color: Black Speed: 2x12 Speed Chainring: 52-36T Compatible chain: HG 12-speed...