Shimano CS-R7101 105 12-Speed Cassette All Season Battery Life: 20h

Battery Life: 20h

CR500 illuminates the road with an even-distributed floodlight and has no dazzle to oncoming riders and pedestrians

Compatibility: SHIMANO standard + S

MATERIAL Clamp material: Aluminium

Shimano CS-R7101 105 12-Speed Cassette All Season Battery Life: 20hDescription Shimano 105 Cassette Sprocket, CS R7101, 12 Speed (11 34T) The CS R7101 12 is a 12 speed cassette from the Shimano 105 road bike series. In contrast to the CS R7100, it's compatible with both electronic and mechanical groupsets. With only about 15 grams more weight than the Ultegra model, it offers fast and smooth shifting, even when you pedal hard. It has the same width as an 11 speed cassette, so the sprockets are closer together. This