OSPW Pulley Wheel System for Shimano 9000/6800 Series - Alloy Pulley, Carbon Cage, Black eyewear accessories and we finish off the

and we finish off the neck and wrists with reflective binding for visiability in case you're caught out after sundown

compatibility with Infinite Light Power Pack+

including those with fenders

Smart sensor technology senses motion and turns Vya on when inserted into mount

we’ve reduced the driving diameter

OSPW Pulley Wheel System for Shimano 9000/6800 Series - Alloy Pulley, Carbon Cage, Black eyewear accessories and we finish off theThe CeramicSpeed Oversized Pulley Wheel System provides optimization and increased efficiency of the rear derailleur through its extremely low friction bearings and unique overall design. Hardened steel bearing races Only compatible with Ultegra 6700 6770 6800 6870 mechanical and Di2 rear derailleurs and Dura Ace 7900 7970 9000 9070 mechanical and Di2 rear derailleurs (up to 28t cassettes) Not compatible with Shimano Dura Ace 9100 9150 and Ultegra