The premium and original Goldspeed SX-F ATV tires feature special formulated rubber compounds from Europe proven to deliver unmatched traction yet still provide a long lasting wear life. Each compound delivers an exclusive traction to tune your machine perfectly for each track/terrain. Our engineering team precisely constructed each tire to be the exact & correct height on while on the fly to provide unmatched steering control. Constructed with new advanced Puncture Proof Material (PPM) exclusively on the 21x7x10 to deliver a outstanding durability. Experience a tire every Pro racer dreams of, specifically made to set you apart, developed with top ATV champions around the world.