Sram Cassette 9 Speed SRAM XG-1299 Eagle Cassette Rainbow 12 Speed 10-50t SRAM Cassette 10-speed The design is nickel-plated steel, which keeps corrosion and rust at bay for a long life. SRAM NX Eagle PG-1230 Cassette (Black) (12 Speed) (Shimano HG) (11-50T) - Performance Bicycle The spline configuration means it fits any SRAM 9/10 speed hub. SRAM Cassette VTT XG-1299 XX1 Eagle 12-V, Or, 10-52 Denti | Maciag Offroad Cog Material: forged 7000 series alloy , Includes: 1 lockring Cog Sizes: 11 - 23t, 11 - 26t, 11 - 28t, 11 - 32t, 11 - 36t, 12 - 25t, 12 - 26t, 12 - 27t, 12 - 28t, 12 - 32t, 12 - 36t SRAM XG-1299 Eagle Cassette, 12-speed / Copper The PG-1050 uses WiFLi SRAM (wider, faster, lighter) as the basis for its design. Sram uses PowerGlide technology - design to the ramps and teeth to hold and release your chain for a smooth shift. Using both an option of 11-36 and 12-36, you have a full range of gear shifters so you're never stuck making the frantic up, down, until you find something your legs like.