SRAM RED XG-1290 Cassette - 12-Speed 10-28t For XDR Driver Body Rainbow E1 Model=Nano Tire } X11SL DLC: superlight chain

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

or SRAM SX cranks

}RockShox Compression Damper 2010 Tora SL / 2011 Recon Silver Turnkey Standard Adjust

One-piece aluminum 2x chainring and carbon crankarms results in a lighter weight stiffer more durable crankset that provides crisp and accurate shifting

and power transmission are certainly worth it

SRAM RED XG-1290 Cassette - 12-Speed 10-28t For XDR Driver Body Rainbow E1 Model=Nano Tire } X11SL DLC: superlight chainDesigned 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