When off-roading Jeep owners modify their axles for even better performance over rocks, across sand, and through mud, Dana takes notice. The Ultimate Dana 60 axle incorporates many of these modifications and innovations, so you get premium performance right from the start. Engineered to be a direct-fit, bolt-in solution for the Jeep Wrangler JL, Ultimate Dana 60 axles are built for superior strength inside and out. The full-float design of the Ultimate Dana 60 axle means that the vehicle weight is carried by the housing instead of the shaft. So, you can enjoy a greater load-carrying ability wherever your Jeep takes you. The Ultimate Dana 60 axle features Spicer 35 spline SAE-4340 nickel chromoly steel axle shafts to help meet the rigors of off-road, providing maximum strength and durability for vehicles with larger tires.