Specifications Hign-concerned Chemical:None Type:Road Bike Freewheel is_customized:No Model Number:R8000/CS-HG800 Sensitivity:108 Sounds Flywheel Adjustable Gear Number:11-Speed Material:Alloy Gear Teeth:11T Freewheel Speed:10 Origin:Jp(origin) Components:Freewheel CS-R8000 ULTEGRA - 11-Speed - HG-EV - Road Cassette Sprocket System engineered for use with the ULTEGRA R8000 groupset, the R8000 cassette is available in a wide range of road and mixed surface ratios. It is compatible with HG-EV and HG-X11 chains. FEATURES High-performance gear combinations provide superior rider choice PRODUCT SPECIFICATIONS MODEL NO CS-R8000 SERIES ULTEGRA R8000 Series Average weight 232 (11-25T) 251 (11-28T) 269 (11-30T) 243 (12-25T) 300 (14-28T) 292 (11-32T) Combination 11-12-13-14-15-16-17-19-21-23-25T/ 11-12-13-14-15-17-19-21-23-25-28T/ 11-12-13-14-15-17-19-21-24-27-30T/12-13-14-15-16-17-18-19-21-23-25T/14-15-16-17-18-19-20-21-23-25-28T/11-12-13-14-16-18-20-22-25-28-32T Combination name (Group name) 11-25T/11-28T/11-30T/12-25T/14-28T/11-32T Type HG-EV Compatible chain LINKGLIDE, HG 11-speed Rear speeds 11 Aluminum gear_QTY (pcs) 0 Aluminum spider arm_QTY (pcs) 1 Carbon spider arm_QTY (pcs) 1 HG spline (ROAD 11-speed) Steel gear_QTY (pcs) 11 Titanium gear_QTY (pcs) 0 CS-HG800-11 - 11-Speed - HG-EV - 11-34T Road Cassette Sprocket Compatible with GS cage rear derailleurs, the HG800-11 cassette offers low climbing gears perfect for mixed surface riding. It is compatible with both 10 and 11-speed freehubs. FEATURES Hub body designed to fit a variety of bikes from MTB to road bikes * Spacer required to fit hub body to road bikes PRODUCT SPECIFICATIONS MODEL NO CS-HG800-11 SERIES ULTEGRA R8000 Series Average weight 335 Combination 11-13-15-17-19-21-23-25-27-30-34T Combination name (Group name) 11-34T Type HG-EV Compatible chain LINKGLIDE, HG 11-speed Rear speeds 11 Aluminum gear_QTY (pcs) 0 Aluminum spider arm_QTY (pcs) 2 HG spline (Others) Steel gear_QTY (pcs) 11 Titanium gear_QTY (pcs) 0