The 370Z / G37 Pro-Level Axle Kit feature a direct fit outer CV stub made from a high grade proprietary material, Porsche style 108mm CV's on both ends with upgraded internal races and billet 4340 cages. These axles our signature aerospace quality 30 spline torsional center bars that twist significantly more than a factory unit, allowing them to absorb a great deal of the shock produced by high horsepower applications. The axle kit also includes precision billet adapter plates with hardware to mount to the factory differential stubs. Rated to 1200HP with a 1-year warranty. Price listed is for both axles.