Racing Dynamics stainless steel sport rear muffler with dual polished 90 mm round tips embossed with "RACING DYNAMICS" logo. Fits BMW 325i/ci/330i/ci/330d (E46) 2001-on; for models with dual inlet pipes to rear muffler. All stainless steel, easy bolt on installation. This rear muffler gives you a richer tone without blasting you out and improved exhaust flow. To install you may have to cut your existing exhaust and slip on this muffler. Clamps are provided (photo shows typical clamps, but they can differ). No welding should be necessary.