DC Sports SCS7021 Honda Civic EX/Si Polished Stainless Steel Single Canister Cat, Back Exhaust System Individually tuned and dyno tested for maximum performance Uses factory mounting locations for ease of installation and solid hangers for added durability Late model systems meet 95 dB exhaust noise restriction requirements CNC mandrel bends with robotically-welded fittings deliver perfect fit Stainless steel piping with TIG welded, CNC machined flanges