Real aero, real speed, real control. The BMC Speedmachine 01 FOUR combines aerodynamic mastery with unmatched rider fit adjustment range, giving you an edge beyond our lab and wind tunnel. Triathlon or time trial, regardless of race format, you will benefit from the engineering of Red Bull Advanced Technology and our BMC Impec Lab. Our Speedmachine 01 FOUR is fitted with components that prioritize you – like the Profile Design Aeria 3 armrests and extensions, the precise Shimano 105 Di2 as well as the Fizik Transiro Aeris – this bike is designed for speed that stands up to the demands of the road.Frame:Speedmachine 01 Premium Carbon | ICS Technology Stealth Cable Routing | Integrated Fuel Tank 1200 Hydration System | Integrated Rear Storage 260 | Stealth Dropout Design | Flat Mount Disc | 142x12mm Thru-AxleFork:Speedmachine 01 Premium Carbon | ICS Technology | Stealth Cable Routing | Stealth Dropout Design | Flat Mount Disc | 100 x 12mm Thru-AxleCockpitHandlebar:BMC Speedmachine Flat Cockpit | Profile Design Aeria Ultimate with Ergo+ Armrests and 45/25 SLC Aerobar ExtensionsSeatSeatpost:BMC Speedmachine Seatpost 0 Offset | 0mm, 12.5mm, 25mm OffsetsSaddle:Fizik Transiro Aeris Long Distance R5DrivetrainCrankset:SHIMANO 105 (FC-R7100)Chainrings:52-36TCassette:SHIMANO 105 (CS-R7101)Cassette Size:11-34TChain:SHIMANO CN-M6100Front Derailleur:SHIMANO 105 Di2 (FD-R7150)Rear Derailleur:SHIMANO 105 Di2 (RD-R7150)Shifters:SHIMANO Switch buttons Di2 (SW-R9160 & SW-R9150)Gears:2 x 12Bottom Bracket:PRAXIS T47x68BrakesBrake Levers / Calipers:TRP TT HYDRO HD-T910 HydraulicRotors:TRP R160C04M | CenterlockRotor Size (F/R):160 / 160mmWheelsRims:AR 27 | Tubeless Ready | 27mmHubs (F/R):CL-712 & RXC-142 CenterlockTires:Pirelli P Zero Road TLR | Tubeless | 28mm [or] Vittoria Rubino IV | Tube type | 28mmTubeless Information:Tubeless Rim | Tubeless TiresAccessoriesIn the Box:Fuel Tank 1200 with straw and bite valve | Rear Storage 260 | Intergrated Rear Light 25Additional InformationTire Clearance:30mmWeight without Pedals:10.1kg | Size M with all accessoriesASTM Classification:Level 1System Weight Limit:110kg