
The Tour de France - the biggest, most famous bike race of all - is an event fought more and more on marginal gains.
At this year's Grand Départ, the 22 participating teams parked up by Bilbao's San Mamés stadium, and readied their equipment under cloudy Basque skies. There, armed with a camera and a curious mind, Cycling Weekly went hunting for the latest tech. And we weren't disappointed.