Shimano CS-HG800 Ultegra 11 Speed Cassette $170.00 11-34 - $170.00 Quantity This product is currently sold out. Please fill in the form below if you'd like to be notified when it becomes available. 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.