The cervelo s5 dura ace road bike 2017 delivers a pure speed performance through a winning combination of innovative design carbon components and a shimano specification this cervelo racing road bike comes with a rotor 3d chainset for maximised power transfer and continental grand prix tyres for control and finesse on even the most inhospitable of tarmac the s5 dura ace has undergone extensive testing to hone the frame for a form so aerodynamic it slices straight through the air result