During the R&D process, Pirelli succeeded in developing an innovative casing material. Considering the significant performance improvement of this compound, Pirelli decided to launch a new and improved P ZERO Race TLR. A new casing solution was developed focusing on one of the most important parameters for bicycle tires: rolling resistance. The new SpeedCORE casing consists of a thin, airtight layer made from a rubber compound with aramid particles, which forms the first layer from the inside. The high flexibility of the rubber compound makes the tire faster and smoother, while the aramid layer provides better puncture protection. The casing is completed with a 120tpi nylon fabric and a puncture-resistant aramid breaker. The tread pattern, which utilizes Pirelli's most advanced SmartEVO compound, guarantees top performance.