SRAM RED XG-1290 Cassette - 12-Speed 10-28t For XDR Driver Body Rainbow E1 Model=Nano Tire front/rear rear (HG 8-11sp) axle/spacing

front/rear rear (HG 8-11sp) axle/spacing (mm) 12x148 Boost hole 32h color turquoise weight 286g

and power transmission are certainly worth it

The cap is designed for years of leak-free use

15 and 25 mm stack height top cover options  (6mm cover = 6mm total stack

or SRAM SX cranks

SRAM RED XG-1290 Cassette - 12-Speed 10-28t For XDR Driver Body Rainbow E1 Model=Nano Tire front/rear rear (HG 8-11sp) axle/spacingDesigned for smooth and fast shifting Gradual gear progression between cogs at least five one tooth jumps on 10 28T, 10 30T and 10 33T cassettes 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 SRAM Model ID: CS XG 1290 E1 TECH SPECS Cog Details 101112131415161719212428 Speed 12 Finish Rainbow Cog Material Steel