The Specialized Air Trak Grid Lite T5/T7 TLR XC Tire is built for one thing: getting cross-country racers to the podium as quickly as possible. Combining an ultra-fast tread design with Specialized&';s dual-compound GRIPTON T5/T7 rubber and lightweight Grid Lite casing, the Air Trak delivers exceptional speed on hardpack while maintaining the traction needed to carry momentum through corners and technical sections. The fast-rolling center knobs minimize rolling resistance, while the grippier T7 compound on the outer knobs provides confident cornering traction. At approximately 680g in the 29 x 2.35 size, the Air Trak offers an impressive balance of low weight, speed, and durability for demanding XC racing. Key Features GRIPTON T5/T7 Compound - Fast T5 center rubber and grippy T7 side knobs maximize speed and cornering traction Grid Lite Casing - Lightweight 60TPI construction with sidewall protection and cut resistance Fast-Rolling XC Tread - Optimized knob design delivers exceptional straight-line speed and responsive handling