Primitive's skid plate provides rear differential protection for your 3" exhaust systems. Constructed from aircraft-grade aluminum and stainless steel, installs in minutes with common hand tools. Fits 2004-2007 STI models and anything pre multilink rear suspension with an R180 rear differential. Primitive skid plates offer the best protection for the underside of your car. Rally-proven and tough enough for off-road abuse. Robust enough to save you from that random piece of debris lying in the middle of the freeway. Ensures complete protection for the most vulnerable components. We have designed all our aluminum skidplates to be direct bolt on, no drilling, cutting or modifying required. When designing we consider things like approach angles, reversing over obstacles, jack-up points, ease of maintenance, and maximum ground clearance. We continue to advance, innovate and refine the segment with our new and existing designs.