The Wheels Manufacturing Accelerator 11-speed Conversion cassette is for installing 11 cogs on a Shimano 10, 9 and 8 speed freehub body for use with 11 speed Campagnolo shifters and derailleurs. It is made from remanufactured Shimano cogs to provide reliable shifting performance. A lockring is included.
Please note: this will not work on Chris King hubs or other aftermarket hubs with unusually high or low flanges. Also will not work on Shimano 10-speed only hubs or wheels.