You need new axles. American CV axles are aftermarket, but they are not an upgrade. With the 3" lift you need to invest in gorilla or turner axles. No other axle is going to hold up to the increased angles. Your stock axles are going to break, so why not sell them while they are still good to offset the cost for the new axles? Rhino brand axles are better than stock, but still will not hold up on a lifted atv.