KMC React 10 Speed Cassette, Black, 11/36T

Carefully crafted to link perfectly with all compatible chains and unbeatable fluidity and lack of friction with KMC's own chains Unique lifting ramps design carries the chain smoothly upward on the cog Lowering Ramps aligns the chain quickly, safely and smoothly Cog teeth design perfectly pairs with KMC chains, reducing friction and resulting in perfect drivetrain coordination and increased durability Compatibility: HG Driver