SRAM RED XG-1290 Cassette - 12-Speed 10-28t For XDR Driver Body Rainbow E1 Weight-179g which is optimized for SRAM

which is optimized for SRAM Flattop chain

Fully light-weight right to the valve - about 40% less weight than a comparable Schwalbe extra light tube

A hard kick wax for cold conditions

}Wheels Manufacturing BB30 Bottom Bracket - DUB Spindle ABEC-3 Bearing

SRAM RED XG-1290 Cassette - 12-Speed 10-28t For XDR Driver Body Rainbow E1 Weight-179g which is optimized for SRAMDesigned 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