Part of D.I.D's Exclusive Racing Series, ATV specific 520ATV2 chain is an X-Ring sealed chain that has plenty of strength and will give you a great chain life, Greatly increased sealing performance with four section, Keeps dirt out and lubrication in, Twisting action disperses the pressure and minimizes power loss, Maximum wear resistance, Comes with clip-type connecting link, Steel alloy construction minimizes heat cracking in cold weather due to severe heating and cooling of the chain during competition, Trusted and used some of ATVMX's top riders