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.

The cogs are nickel-plated steel for superb durability while the aluminum spiders and lockring help shave grams. And of course, the tooth profiles and shifting gates ensure crisp, smooth shifting that Shimano's 11-speed drivetrains are known for.

Features:

• Nickel-plated steel cogs plus aluminum spider and lockring strike an optimal balance for durability and weight savings
• Cogs' tooth shape and design makes for super-smooth gear changes
• Compatible with Shimano 10-speed and 11-speed freehub bodies
• Includes spacer for use on 11-speed road freehub bodies
• 11-34 cassette requires use of longer, mid-cage Ultegra R8000 GS rear derailleur