Bulit to last: Our U-joint twice as strong as stock; so you can count on it to keep you going. You’ll have confidence to drive harder and keep the pedal down longer without worrying about damaging your drivetrain or prop shaft. It’s the ultimate replacement U-joint. Strong and Durable: We injected our U-joints with high temperature lithium grease; combined with the redesigned internal style bearing cap seal; they are made to last longer than OEM U-joints. Rugged ATV U-joints are made from high quality structural steel and precisely machined to directly replace OEM U-joints. High quality alloy structural steel in greaseable for long service life; with high temperature lithium complex 3 grease. Redesigned internal style rubber seal. Heavy-duty U-joint built better; stronger U-joints that can handle the power of any Arctic Cat UTV or ATV. Whether you want to replace your busted U-joint or upgrade before you break something; our joints will increase the strength longevity.