Get the best sounding, most powerful exhaust for your 718 GT4. No compromises. Over 3 years in development and (over!) 11 Prototypes to get it right.   Great Sound, and Great Power without drone! This is the complete exhaust upgrade for your 982/718 4.0L Boxster...

Great Sound, and Great Power without drone! This is the complete exhaust upgrade for your 981/718 4.0L Boxster or Cayman. This system checks all the boxes: Big performance gains, no drone, no CEL's, retains cats and valves and gives you the sweet flat-6 symphony...