With its race-optimised, FACT carbon frame, efficient handling & increased 19% stiffness-to-weight ratio over the previous Tour de France winning version, the Specialized Tarmac SL4 Sport has plenty of Pro-Tour proven speed up its sleeve. Simply put: nothing is lighter & stiffer. That's why it's the go-to choice of the pro peloton. Ride it hard, ride it fast, just wind yourself up & go. 2014 Tarmac SL4 Sport Highlights Specialized SL4 FACT 9r carbon frame with uniquely shaped, tapered headtube & OSBB: now even stiffer & lighter for pure, unbridled speed & power; paired with tapered, full-monocoque FACT carbon fork for ultimate steering precision Specialized Turbo Elite 23c tyres roll like a racing tyre, but offer incredible durability & puncture resistance through Black Belt protection FSA Gossamer BB30 with race-compact gearing delivers excellent power transfer & consistent shifting Smooth, precise Shimano 105 STI shifters are renowned for their race-ready performance & exceptional value