Wide-range 12-speed road cassette from Shimano’s Ultegra R8100 series. Delivers smooth Hyperglide+ shifting, even under load, and pairs perfectly with both mechanical and Di2 12-speed groups. The 11–34T range offers extra climbing support without sacrificing tight mid-gear spacing.
Model: CS-R8100
Speeds: 12-speed
Range: 11-34T
Mount: Shimano 12-speed HG+ (new spline standard)
Condition: Brand new / never mounted (please confirm if takeoff)
Compatible with Shimano 12-speed road drivetrains — Di2 or mechanical — for riders who want modern range with road-race gearing feel.