The Level 5 CTS-V axles are designed to handle over 1000HP. Using our chromoly center bars, 108mm Porsche-style CV's that have our very own custom 30 spline races (all Porsche CV’s come with a small 28 spline) bolt-on chromoly inner and outer stubs, these are a direct bolt-on that fit the stock hubs and come complete with all the necessary hardware. Not only will these axles handle the horsepower, we have made the axle to with same diameter bars on each side (both larger than stock), this is done on high ends axles for one reason. If you make them one big and one little all you are doing is making one strong and the other stronger. The CTS-V is notorious for wheel hop at launch which can be extremely damaging to the drive train and makes getting traction very difficult. There are correct ways to handle and eliminate wheel hop, at this level it should be done correctly and not rely on axles to do the job, these axles are priced as a set and have a 1-year warranty.