SHIMANO 12S Single CS Compatible IRDM8100GS RD-M8100 GS/Front 10-45T

Increased road clearance supports aggressive riding 28 mm higher road clearance than RD-M8100-SGS Lightweight short cage design for smooth rear suspension operation Quick and precise shifting performance for a variety of trail conditions Quiet drivetrain in any gear position New bumper stop added to the rear derailleur pulley cage 13T big pulley Stable drivetrain even on rough terrain Compatible with 10-45T cassette sprocket (1x12 speed) 10-45T (12 speed)