Continental Grand Prix 5000 Timetrial TR Tire - 700 x 25, Tubeless, Folding, Black, BlackChili, Vectran Breaker, LazerGrip, ACTThe Grand Prix 5000 TT TR is the specialist tire for races against the clock, making it the fastest GP 5000 tubeless tire for the pursuit of speed, be it in a criterium, time trial or triathlon. Tubeless ready (TR) carcass construction is robust and impervious against damage and penetration from foreign objects Designed and built to go fast Product Specifics Flat Protection: Tread and Sidewall TPI: 220 Color: Black Weight: 220 Defined Color: Black ISO