SRAM Red Cassette XG-1290 E1 12-Speed 10-30T Bike Accessories_Light Set It improves comfort and adds

It improves comfort and adds spring to drive optimum performance

Thick bottom tab keeps large bottles in their place

2 cups with bearings installed

Be aware that the UFO treatment is not optimized for wet and muddy conditions

SRAM Red Cassette XG-1290 E1 12-Speed 10-30T Bike Accessories_Light Set It improves comfort and addsDesigned for smooth and fast shifting Gradual gear progression between cogs at least five one tooth jumps on 10 30T while still offering a wider range 10 tooth start helps provide a wider gearing range Designed to work with an XDR driver body One piece machined steel X DOME design for weight savings Specifications Speed (CS): 12s Gearing: 10 30t Cog finish (Cassette): Silver Technology (Cassette): XG Cog sizes: 10, 11, 12, 13, 14, 15, 17, 19, 21, 24,