High performance, all conditions road race tyre which works well on all road surfaces ASC Silica compound offers low rolling resistance & light weight to ensure a fast & supple ride, with excellent feedback & grip Outstanding puncture resistance due to the Vectran breaker belt The first road race tyre to include Vectran, which makes the GP4000 tougher & lighter than its predecessor, the GP3000 Vectran offers more resistance to cuts than Aramid, is five times as strong as steel, & is lighter than a nylon Double breaker belt An anti-cracking formula prevents UV damage, & increases lifespan Wear indicators help gauge the life of the tyre Weight: 210 grams