1.auto part for titanium exhaust muffler,, 2.Suitable :BMW M3E92 3.Tube Diameter: ... 76mm ,total weight:8kg 1.auto part for titanium exhaust muffler,,2.Suitable :BMW M3E923.Tube Diameter:63.5mm, ... ultra-thin titanium alloy vent-pipe play clear and crisp exhaust sound, while moving purple and blue burnish change also ... j titanium tail tsui, can make the rear add Racing feeling. auto manifold for Exhaust