The specialized s works tarmac dura ace road bike 2017 has been built for the top step of the podium taking years of experience in the racing world to create the best ride yet in terms of performance handling and comfort this all round design philosophy for the specialized sworks tarmac has led to wins in every grand tour and the last two world championships and it doesn39t stop there featuring an impeccable s works fact 11r carbon fibre construction that39s unbelievably light stiff