Shimano 5800 Road Bike Cassette

Shimano 5800 Road Bike Cassette. Redesigned with trickle-down technology from Ultegra and Dura-Ace groups, the Shimano 105 CS-5800 Cassette is now available with 11 speeds and features optimized shifting across the entire gear range. Small gear steps improve overall rhythm, which in turn gives you smoother, more consistent and controlled cadence.