- 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
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.