SL4 FACT 9r carbon frame with uniquely shaped - tapered headtube and OSBB: now even stiffer and lighter for pure - unbridled speed and power; paired with a tapered - full-monocoque FACT carbon fork for ultimate steering precision,Specialized Turbo Elite 23c tyres roll like a racing tyre - but offer incredible durability and puncture resistance through BlackBelt protection,FSA Gossamer Pro BB30 with race-compact gearing delivers excellent power transfer and consistent shifting,New Shimano Ultegra - 11-speed mechanical drivetrain delivers light-action - precise shifting in a lightweight system - forming one of the finer parts kits available.