The 800HP Level 5 kit for the GC8 Impreza WRX / 2.5 RS (R160 Rear) is a complete rear system including both axles, hubs and ARP extended studs. The axles feature our our aerospace grade torsional 32 spline axle bars, increased from the factory 29 spline bars, and a billet ball & cage inner cv with our high grade inner differential spline for the R160 differential, and a proprietary outer CV with a larger spline. The hubs are made to accomodate the larger spline and are also able to accept the factory ABS ring. Rated to 800HP with a 1-year warranty.
Please Note: This set of axles is for the R160 differential only, if you are using the R180 differential see part # SU46