The Shimano SLX M7000 rear derailleur provides efficient shifting and smooth driving with exceptional chain stability. FEATURES: Shimano Shadown RD+ technology uses a rear derailleur stabilizer to reduce chain slap and provide a quieter drivetrain Compatible with cassettes that feature a 42t cog for 2x11 drivetrains or a 46t cog for 1x11 drivetrains SPECS: Largest Cog: 46 Rear Derailleur Mount Type: 10x1 Standard , Shimano Rear Direct Mount Chain Wrap Capacity (teeth): 41 Cage Length: Medium (GS) Rear Der/Shifter Compatibility: Shimano DynaSys11 Drivetrain Speeds: 11