Description
- ・Refined 12 step gear combination provides peak efficiency and accelerating performance for every racing situation
- ・Faster, smoother shifts under maximum pedaling force
- ・Compatible with new 12-speed and road 11-speed FREEHUB body
Product Description
CASSETTE SPROCKET,CS-R8101, ULTEGRA, 12-SPEED, 11-12-13-14-15-16-17-19-21-24-27-30T, IND.PACK