Gemini Cat-Back Exhaust Systems by Invidia The Invidia Gemini catback exhaust system for the Q50 sounds as good as it looks. A full true dual exhaust system, the Gemini features mandrel bent stainless steel piping and a free flowing oval style sport muffler to provide better exhaust flow for improved performance. Bolting up a Gemini to your will allow your Q50's exhaust note to come through loud and clear when you want it to, without producing harsh or overly loud overtones during regular driving; the perfect choice for those who want great performance with an exhaust note that won't wake the dead. The Invidia Gemini exhaust is available with rolled stainless tips, rolled titanium tips, or slash cut titanium tips. Features Piping Diameter of 60mm Exhaust Tip Diameter of 110mm Quality Stainless Steel Construction Full True Dual Exhaust System Free Flowing Oval Sport Muffler Tone is Loud and Clear w/o Harsh or Overly Loud Overtones Applications 2014+ Infiniti Q50 (all) What's in the box? 1 - Gemini Cat-Back Exhaust Necessary Installation Hardware Warranty Manufacturer's Warranty