The Shimano 105 12-speed rear derailleur combines the smooth and stable shifting that is a staple of Shimano Shadow RD design with direct mount compatibility and a wider gear range capacity. Shadow RD offers a low-profile design with single tension construction that prevents the derailleur from hitting the chainstay in rough riding conditions Direct Mount feature is design for large contempory frames with large section chainstays, in particular mountain bikes with thru-axle dropouts Wider gear range capacity and stable shifting performance Compatible with HG 12-speed chains 41t total capacity 36t low sprocket maximum 34t low sprocket minimum Item Specifications Cage Length Medium Chain Wrap Capacity (teeth) 41 Color Black Drivetrain Speeds 12 Largest Cog 36 Rear Der/Shifter Compatibility Shimano Road Rear Derailleur Mount Type 10x1 Standard Rear Derailleur Mount Type Shimano Rear Direct Mount Weight 249 Shimano 105 RD-R7100 Rear Derailleur Rear Derailleur UPC: 192790819013
