SRAM RED XG-1290 Cassette - 12-Speed 10-28t For XDR Driver Body Rainbow E1 Model=Nano Tire or SRAM SX cranks

or SRAM SX cranks

Mountain versions for 73mm or 68mm bottom bracket shells or Road specific versions for 68mm bottom bracket shells

and power transmission are certainly worth it

and to fit additional accessories like a pump

} X11SL DLC: superlight chain for use with 11-speed Campagnolo/Shimano/SRAM with Diamond Like Coating for extra durability

SRAM RED XG-1290 Cassette - 12-Speed 10-28t For XDR Driver Body Rainbow E1 Model=Nano Tire or SRAM SX cranksDesigned 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