The Tusk (Heavy Duty) HD CV Axle is a must have for any serious off-road enthusiast with an ATV or UTV. Each axle has an increased shaft diameter and bigger CV joint components than standard axles to take the abuse from the terrain. The shaft is constructed of a 4340 chrome-moly high tensile strength steel. CV joint internals are precision CNC machined for precise fitment and increased swing angle. Dont get left on the trail, get your HD CV Axles for your ATV and UTV from Tusk!