Precise, quick-shifting 12-speed road rear derailleur 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. FEATURES Stable shifting performance SHIMANO SHADOW RD Wider gear range capacity Max. low sprocket: 36T Direct mount compatible PRODUCT SPECIFICATIONS MODEL NO RD-R7100 SERIES SHIMANO 105 R7100 MECHANICAL Series Color Series color Average weight 249 Rear speeds 12 Compatible chain HG 12-speed Top-normal spring type|SHIMANO SHADOW RD ✔ Mount|Direct attachment (conventional) ✔ Mount|Direct mount ✔ Cable adjuster ✔ Max. front difference 16T Total capacity 41T Low sprocket|Max. 36T Low sprocket|Min. 34T Top sprocket|Max. 11T Top sprocket|Min. 11T Fluoric coated link bushings 2 Pulley|Guide pulley bearing ✔ Pulley|Teeth 11T Pulley|Sunken type pulley screw ✔