The Shimano Ultegra CS-R8000 cassette is a high-quality gearing system that offers cyclists a superior choice. With 11 gears and a gear ratio of 11-28, this cassette is ideal for racing bikes. The silver design gives your bike an elegant look . The Ultegra CS-R8000 cassette is compatible with Shimano and is recommended for use with HG-X 11-speed and HG-EV 11-speed chains. Product specifications: -Article number: ICSR800011128 - Ean: 4524667623090 - Brand: Shimano - Model: Ultegra - Type: R8000 - Bike type: racing bike - Net weight (g): 251 - Number of speeds: 11 - Compatible body: Shimano -Taste ratio: 11-28 (11-12-14-15-17-19-21-23-25-28) -Recommended chain: HG-X 11 speeds, HG-EV 11 speeds