REMARK Catback Exhaust. Toyota GR Corolla. Elite Spec Stainless Center CoverOur experienced development team was able to create an exhaust system that sounds great, fits perfectly, and improves exhaust flow. We use larger diameter mandrel bent piping helps to reduce exhaust backpressure. The 3" piping and muffler canister are tucked up neatly under the car allowing ample ground clearance for those planning to lower the stance. The combination of the straight through resonator and high flow muffler canister give the exhaust a