The Madone SLR is Trek's best and lightest aero road frame, but it's the all-new IsoFlow technology that really sets this bike apart. It adds compliance for a more comfortable ride with impressive aerodynamics.Key Features & Benefits:800 Series OCLV Carbon:Trek's lighest-ever laminate, making the Madone faster on any terrain, in any conditionDeep Carbon Rims: Reduce aerodynamic drag so you can ride faster and race to the top of the podiumWireless SRAM Force eTap AXS Drivetrain: Keeps your cockpit minimalistic and offers precise shiftingFull Specification:Frame: 800 Series OCLV Carbon, KVF (Kammtail Virtual Foil) tube shape, IsoFlow seat tube, invisible cable routing, 3S aero chain keeper, T47 BB, flat mount disc, 142x12mm thru axle.Frame Fit: H1.5 RaceFork: Madone KVF full carbon, tapered carbon steerer, internal brake routing, flat mount disc, carbon dropouts, 12x100mm thru axleFront Wheel: Bontrager Aeolus Pro 51, OCLV Carbon, Tubeless Ready, 100x12mm thru axleRear Wheel: Bontrager Aeolus Pro 51, OCLV Carbon, Tubeless Ready, 51mm rim depth, SRAM XD-R driver, 142x12mm thru axleSkewer Rear: Bontrager Switch thru-axle, removable leverNumber of Gears: 24Gear Shifters: SRAM Rival eTap AXS, 12-speedChainset: SRAM Rival AXS Power Meter, 48/35, DUBChainrings: 1x: 50T, 2x: 54/40Rear Cassette: SRAM XG-1250, 10-36, 12-speed Chain: SRAM Rival, 12-speedFront Derailleur: SRAM Rival eTap AXS, braze-onRear Derailleur: SRAM Rival eTap AXS Bottom Bracket: SRAM DUB, T47 threaded, internal bearingPedals: Not includedRims: Bontrager Aeolus Pro 51, OCLV Carbon, Tubeless Ready, 100x12mm thru axleFront Tyre: Bontrager R3 Hard-Case Lite, aramid bead, 120 tpi, 700x25 cRear Tyre: Bontrager R3 Hard-Case Lite, aramid bead, 120 tpi, 700x25 cBrakes: SRAM Paceline, rounded, CenterLock Handlebars: Madone Integrated handlebar/stem, OCLV CarbonHandlebar Grips: Bontrager Supertack Perf tapeHeadset: Madone SLR headsetStem: Madone Integrated handlebar/stem, OCLV CarbonSaddle: 47-52 Bontrager Aeolus P2 Elite; 54-62 Bontrager Aeolus Elite, austenite railsSeatpost: Madone aero carbon internal seat mast cap, integrated light mount, 0 mm offsetAccessories: SRAM eTap battery pack (with charger)Weight:56 - 8.03 kg / 17.71 lbs