SHIMANO 105 R7100 Rear Derailleur - 12-Speed - 36t Max closeout Troy Brosnan wanted to create

Troy Brosnan wanted to create a "unicorn tire" a center tread design that carried speed easily but with edge blocks worthy of world-class cornering speed

The 700c x 38 mm wheel and tire package rolls quickly and smoothly on pavement

All e-tube wires may be used for internal or external applications

Multi gear use will result in slower

mostly in Taiwan and China

SHIMANO 105 R7100 Rear Derailleur - 12-Speed - 36t Max closeout Troy Brosnan wanted to createThe 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.