Three alloy carriers & 4 titanium sprockets make this Shimanos lightest ever 9-speed 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 each mounted with 2 sprockets to reduce weight & increased stiffness giving more precise faster shifts Four largest sprockets are made from titanium to reduce weight without sacrificing strength Sprockets are cut away extensively & drilled to further reduce weight without reducing rigidity Nickel-plated finish offers hardwearing resistance to corrosion Alloy cassette lockring For Super Narrow 9-speed HG chains Average weight 224 g for 11
- 32T