Shimano Deore XT components have long been recognised as the standard in high performance components. This highly innovative group continues to evolve to keep pace with the changing demands of the latest bicycle designs and riding styles, just like it did in 1982 when it made its debut as the world's first MTB group. The group is a perfect example of trickle-down technology and brings XTR's performance without it's price tag. This is a dead ringer for Shimano's top dog! This is an incredibly high performance 9 speed cassette with close ratio gearing allowing for an efficient use of energy with finer cadence control. Finished with chrome plating for durable protection from corrosion, along with a chrome-plated steel lockring this mountain bike cassette is great for use with Super Narrow 9 speed HG chains. This Shimano cassette features Hyperglide (HG) sprockets for improved chain control and fast and responsive shifting . Whereas conventional sprockets cause the chain to ride up and over the gear teeth before engaging the sprocket, this special HG design guides the chain quickly and directly to the next sprocket without override with computer designed tooth configuration and contoured shift gates. This all adds up to incredibly slick, silky smooth and crisp shifts even when under load! Why not check out the rest of our extensive range of bike components and kit your bike out with some of the highest quality parts available on the market. Plus, with 10% off most items when you order online you can make inexpensive upgrades to your bike and get one step closer to the ride of your dreams - for less! Features High performance 9-speed 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 amore efficient use of energy through finer cadence control Six largest sprockets are mounted on a lightweight alloy carrier 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 Chrome-plated steel cassette lockring For Super Narrow 9-speed HG chains Weight: 264 g for 11 - 32T "