evo.com | Shimano Cassettes > The durability of a Shimano 105 CS-R7000 11-Speed Cassette is only part of the reason so many racers run it. It's lightweight, efficient, and shifts smoothly, too. Nickel Plated Steel Cogs Aluminum Spider Arm Steel Lock Ring Compatible with Shimano 11-Speed Road Components | Shimano 105 CS-R7000 11-Speed Cassette 2022 - 11-30T | Aluminum