Shimano Ultegra CasSette Sprocket, CS-R8000-11, 11-Speed (11-28T) t-shirt A good quality bottom bracket

A good quality bottom bracket for traditional chainsets

Get up to 6 hours of battery life with radar

Seals holes up to 3-4mm

SERIES: XT

Size - Set of 6 Ceramic Bearings

Shimano Ultegra CasSette Sprocket, CS-R8000-11, 11-Speed (11-28T) t-shirt A good quality bottom bracketSpecifications This is the Shimano Ultegra CS 8000 11 Speed Cassette. Using Hyperglide sprockets with revised tooth profiles, the CS 8000 11 speed cassette features reduced wear and lightning quick shifts. Even under the most demanding gear changes you can expect improved shifting thanks to a rigid aluminum carrier to keep the cogs in check. The available ratio combinations work extremely well with standard, compact or triple cranksets High