Amazon.com : Shimano CS-5700 105 10-Speed Cassette, 11-25T : Bike Cassettes And Freewheels : Sports & Outdoors
The Bike Shop - Shimano- Cassette Sprocket 105 CS-5600 10 Speed The Shimano 105 CS-5600 10-Speed cassette featuring Shimano's "trickle-down" policy finally brings the wide gear range of 10-speed Dura-Ace and Ultegra