The new S-Works Tarmac is Rider-First Engineered to provide every size frame with the hill destroying stiffness & legendary descending prowess the Tarmac is known for. Its a no compromise race-bred machine ready to be built up exactly how you want it.S-Works FACT 11r carbon frame Rider-First Engineered w/ tapered headtube & OSBBFull monocoque FACT carbon fork with a tapered carbon steerer is both light & stiff S-Works FACT carbon seatpost is super light & stiff for optimal power transfer Technical Specifications FRAME S-Works FACT 11r carbon FACT construction tapered/shaped 1-1/8" to size-specific lower headtube compact race design internal cable routing FORK S-Works FACT carbon full monocoque size-specific taper HEADSET 1-1/8" upper size-specific lower hybrid cartridge lightweight bearings 8mm carbon cone spacer w/ 25mm of carbon spacers BOTTOM BRACKET Ceramic Speed ceramic bearings SEATPOST S-Works FACT carbon 20mm offset 27.2mm SEAT BINDER Specialized integrated wedge