We all know the Big Red S doesn't make a 29er, but they make what is arguably the best racing tire for them. These were a Prototype/team tire but due to demand production tires are now available.
The Specialized Fast Trak Pro 29″ tire was designed specifically for the world’s premier mountain bike racers. Its exceptional lightweight, low rolling resistance, and large volume combine to make this the fastest cross country tire on earth. Its tightly-spaced center tread with ramped edges guarantee speed, while well spaced shoulder knobs and the large cornering foot print guarantee traction.
Size: 29x2.00 inches