The RX600 tires rally inspired knobby tread sets the new standard in high performance off-road handling creating a modern design all-terrain tire for today's modern UTV's. The 10-ply rated, reinforced carcass that handles the demands of the high horsepower Pro-R and Maverick-R platforms while still providing the quietest driving all-terrain tire on the market.This Kit Includes:(4) System 3 RX600 (10ply) Radial ATV/UTV Tire [37x10-15]