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