Shimano Ultegra CS-R8101 12-Speed Cassette

The Shimano Ultegra CS-R8101 12-Speed Cassette delivers smooth, precise shifting with a refined gear range for everything from all-out sprints to grueling climbs. Designed with Hyperglide+ technology, it ensures seamless transitions between gears, keeping your cadence dialed and your power steady. Lightweight, durable, and race-ready, this cassette is built to take your road performance to the next level.