Ultegra CS-R8000 11spd Cassette

• 5 largest cogs on alloy and composite spiders
• Light weight and high performance
• Aluminum lockring
• Nickel plated finish
• The 11-34 cassette (120615-07) is compatible with 10 and 11 speed freehub bodies (use 1.85mm spacer for 11 speed road)
• Other sizes are compatible only with 11 speed road hubs