Shimano XT RD-M8120-SGS Rear Derailleur - 12-Speed Long Cage Black For 2x ModelNumber=K2619 9 (mm) Fits wrists with

9 (mm) Fits wrists with a circumference of 135-205 mm

} Advanced GPS cycling computer with touchscreen and button control combines superior navigation

} AIR FLOW CONTACT SYSTEM offers perfect back ventilation Separate and quick-access tool compartment 1

FROM ROSSIGNOL:

For use with frames that have 68mm or 73mm bottom bracket shells

Shimano XT RD-M8120-SGS Rear Derailleur - 12-Speed Long Cage Black For 2x ModelNumber=K2619 9 (mm) Fits wrists withDeore XT RD M8100 Rear DerailleurOffers fast and shockless shifting thanks to HYPERGLIDE+ technology The low profile design includes a bumper added to the derailleur pulley cage Shimano Shadow RD+ technology reduces chain slap and creates a quieter drivetrain Includes large 13t pulley Drivetrain is silent in all gear positions with decreased rear derailleur and chain tension in low gear Largest Cog 45 Color Black Rear Der Shifter Compatibility Shimano