Product Description Shimano sprocket CS-9000 / CS-R9100 - a spare part for Dura-Ace 11-speed This Shimano sprocket is compatible with the Dura-Ace CS-9000 and CS-R9100 11-speed cassette. It is made of steel and is available with 14, 15, 16 or 17 teeth. Depending on the version, the sprocket is suitable for gradations 11-23 (CS-9000 only), 11-25, 11-28, 11-30 (CS-R9100 only), 12-25 or 12-28. Models:11 tooth: sold-out, please use CS-R9100 Y-1VT11000 sprocket as a spare Compatibility:CS-9000Gradation:11-23, 11-25, 11-28Type:w/ integrated spacerManufacturer Number:Y-1YC11000 12 tooth: sold-out, please use CS-R9100 Y-1VT12000 sprocket as a spare Compatibility:CS-9000Gradation:11-23, 11-25, 11-28Type:w/ integrated spacerManufacturer Number:Y-1YC12000 13 tooth: sold-out, please use CS-R9100 Y-1VT13000 sprocket as a spare Compatibility:CS-9000Gradation:11-23, 11-25, 11-28Manufacturer Number:Y-1YC13000 14 tooth: Compatibility:CS-9000, CS-R9100Gradation:11-23 (only CS-9000), 11-25, 11-28, 11-30 (only CS-R9100), 12-25, 12-28Manufacturer Number:Y-1YC14000 15 tooth: Compatibility:CS-9000, CS-R9100Gradation:11-23 (only CS-9000), 11-25, 11-28, 11-30 (only CS-R9100), 12-25, 12-28Manufacturer Number:Y-1YC15000 16 tooth: Compatibility:CS-9000, CS-R9100Gradation:11-23 (only CS-9000), 11-25, 12-25, 12-28Manufacturer Number:Y-1YC16000 17 tooth: Compatibility:CS-9000, CS-R9100Gradation:11-28, 11-30 (only CS-R9100)Manufacturer Number:Y-1YC17100Contents:1 x Shimano Dura-Ace CS-9000 sprocket Manufacturer: Shimano Europe B.V. High Tech Campus 92 5656 AG Eindhoven Netherlands info@shimano-eu.com