2007 Porsche 911 997 Carrera 4s Mufflers, B&B, 3.5" Quad Round Double Wall Tips, For 997 Carrera
- Agressive Exhaust Note yet not intrusive
- Quad Round Tips
- 22 Rear Wheel Horsepower
All Billy Boat Performance Exhaust systems are designed and tested by professional Indy car driver and company owner , Billy Boat.