When thinking quality super duty drive belts, think EPI. EPI has 30 + years of real-world manufacturing and engineering of super duty drive belts. EPI takes a unique approach of testing their super duty drive belt in a real-world riding environment to ensure their super duty drive belt meets the requirements of our customers. EPI's super duty belt is designed as a durable stock replacement belt for powerful off road machines. The super duty belt has a higher tensile strength and heat rating than stock belts. Super duty belts have a close tolerance construction to ensure proper fit, efficiency and durability.