STI Tire & Wheel is now providing a smart choice to sport quad riders and racers with the introduction of the all-new Tech 4. The STI Tech 4 brings high performance to the market at a surprisingly affordable price. The Tech 4 debuts with two models specifically designed for either motocross or cross-country application. The Tech 4 XC provides an extra level of trail durability with a 6-ply rating and comes in taller 21×7-10 front and 20×11-9 rear sizes. They use a high-tech rubber compound that delivers exceptional hook-up on hardpack surfaces, in a unique tread pattern that pulls strongly through soft loam—a winning combination. Lightweight construction reduces unsprung weight and rotational mass for unmatched acceleration and ride. The Tech 4’s carcass is designed to reduce bounce and enhance high-speed control and cornering confidence.