The cervelo r5 dura ace di2 road bike 2017 introduces the rca39s frame to the r series line up providing a ride quality that is simply one of the best available to date striking the perfect balance between weight and stiffness to keep you pushing through every section of the course a high quality squoval shaped carbon frame offer remarkable aero dynamic performance at a low weight combining with the carbon dropouts and the all carbon tapered r5 fork to ensure the racing roa