Bicycle Riders is excited to announce that Specialized in collaboration with McLaren have developed a new advanced carbon layup for an S-Works + McLaren Tarmac SL4.  Early prototypes will be ridden by select riders at this year's Tour de France, where they will gather data and rider feedback.  This bike is so light, stiff and expensive they will be only making 500 in the world.

Now while we have no idea when the S-Works + McLaren SL4 will be released but in the meantime, S-Works SL4 bikes will start arriving in shops in August.  Click below to download the press kit.