The new Level 5 G8 axle/hub kit is designed to handle up to 1400HP, featuring our larger chromoly center bars, 108mm Porsche-style CV's and bolt-on chromoly inner stubs, these go a step further than the Level 4 axles by increasing the spline size going into the hub to 33 (factory is 30 spline) and includes new hubs to accomodate the larger spline that will fit the OE wheel bearings (not included). The kit comes complete with all the necessary hardware. If you are planning on more than 1000WHP and serious drag launching than this is the kit for you.