Boyau CHALLENGE ELITE PRO 700x23c Noir Drop it guarantees the same reliability

it guarantees the same reliability and durability as an 11-speed chain

The high-density foam back protector is ultra-lightweight and highly protective as it is capable of absorbing 95% of the impact sustained

Measure your waist at the narrowest point of your torso

offers precise routes and points of interest

for an even more effective training experience

Boyau CHALLENGE ELITE PRO 700x23c Noir Drop it guarantees the same reliabilityThe CHALLENGE Elite Pro tubular is a versatile model ideal for training and occasional competition on the road. Entirely hand made, it is built around a highly flexible Poly 220 TPI polyester casing and a compound that effectively combines efficiency and grip. It also features PPS puncture protection, for optimum reliability.