Shimano XTR M980 10 Speed Cassette

With Primary Driving Gear choices, the only factor limiting how fast you can go is how much power you can produce.

XTR offers mindlessly fast shifting, and gives racers fewer excuses for losing and even more ways to win.

It's not for everyone, but for those up to the challenge, XTR Race delivers like never before. This 10-speed Dyna-Sys cassette combines stiffness with consistently smooth shifting performance and durability in an innovative lightweight package.

This cassette features: Three alloy carriers and 5 titanium sprockets make this Shimano's lightest 10-speed Dyna-Sys MTB 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 Three separate lightweight alloy carriers reduce weight and increased stiffness giving more precise faster shifts Five largest sprockets are made from titanium to reduce weight without sacrificing strength Sprockets are cut away extensively and drilled to further reduce weight without reducing rigidity Nickel-plated finish offers hard wearing resistance to corrosion Alloy cassette lockring For 10-speed HG-X MTB chains Average weight: 255 grams for 11 - 34 Teeth.