Shimano elevates shifting performance with the XT M771 10-speed cassette. This cassette delivers smooth, accurate gear changes in a lightweight and durable package. Features: - High performance 10-speed Dyna-Sys cassette - Hyperglide sprockets have a computer designed tooth configuration with contoured shift gates, resulting in a crisp smooth shift even under load - Close ratio gearing allows a more efficient use of energy through finer cadence control - Six largest sprockets are mounted on lightweight alloy carriers to reduce weight and increase rigidity - Sprockets are cut away and drilled to further reduce weight without reducing rigidity - Chrome-plated finish offers hard wearing resistance to corrosion - Alloy cassette lockring - For 10-speed HG-X MTB chains - Weight: 323 g for 11 - 34T Ratio: - 11-12-14-16-18-20-22-25-28-32T - 11-13-15-17-19-21-23-26-30-34T - 11-13-15-17-19-21-24-28-32-36T Click here for a Shimano HG54 10 Speed Mountain Bike Chain Genuine, brand new, boxed Shimano product - Biketart are an official UK Shimano stockist.