The cervelo s5 ultegra road bike 2017 delivers superior performance and unrivalled aerodynamics so you can ride faster than ever before when the first s5 was launched just days before the 2011 tour de france it quickly boasted seven days in yellow including two stage wins the full carbon frame is insanely lightweight and it embodies the perfect synthesis of speed and stiffness the bbright platform gives the bike a big stiffness increase whilst keeping it agile and responsive at top