This is the new Level 5.9 axle/hub set similar to DSS Level 5 system but with a major upgrade, the inner cv. DSS has created a Pro-Level Race worthy system that works with the standard spline size on the differential end, you can now use the DSS system with Quaife and other aftermarket limited slip diffs and spools. DSS made a new ball & cage inner cv from high quality chromoly. This inner cv now has 6 contact points and is stronger than a Porsche 930 (108mm) cv (same cv used by many high dollar systems). This along with the 33 spline outer and 36 spline bars makes it the strongest set of axles to date. The Kit comes with both axles and a set of custom hubs that will fit the stock bearing sizes. The kits also come with long ARP studs. This system is designed for 1000WHP and tire size will not affect its strength. DSS is dedicated to bringing you the best drivetrain products at a an affordable price.