The CS-R7101-12 is a Shimano 105 series 12-speed cassette for road bikes. Unlike the CS-R7100, it is compatible with both electronic and mechanical groupsets.
Crowns with 11-12-13-14-15-17-19-21-24-27-30-34 teeth.
MODEL CODE: CS-R7101 RANGE: 105 TEETH RATIO: 11-34 NUMBER OF SPEED: 12 Material: Steel WEIGHT (GR): 361