The Continental X-King 29er Race sport Folding Mountain Bike Tyre is Conti all purpose weapon. With the RaceSport carcass which is lightweight and still gives greater puncture protection then the previous years Supersonic model yet without significant weight penalty should appeal to marathon MTB riders. The Black Chilli compound in the X-King is unique to Continental, 1-8m carbon black particles are incorporated into the formulas of the tyre which and makes it a great compromise between rolling resistance, wear and grip. They are tiny particles that mould better to there surface of the tyre and have more points od contact with the surface. Giving the tyre more grip then the tyre with the Black Chilli compound.