Dual compound combination of two different compounds 65a for low rolling resistance and long life on the inside and 55a on the outside for perfect cornering grip in all conditions tyre casing c3 120 a casing designed for cross country racing and features 120 tpi for less weight and faster rolling tubeless ready tlr special bead technology for quick and tight air sealing of tyre and rim tubeless ready tlr works best with onza39s tyres seal up sealant