Billy Boat Performance Exhaust developed this cat back for the 06-09 Ford F150 with years of racing and street development into its design. Manufactured form only the highest quality T304 stainless steel materials, this true 3” system is a direct bolt on replacement for the restrictive factory exhaust on both Crew and extended cab’s with the V8 engine. CNC mandrel bent tubing for a smooth, uninterrupted exhaust flow and a straight through design muffler incorporating B&B’s proprietary Purge Resonance Technology (PRT) the system emits a deep, muscular note on hard acceleration yet a mild tone at cruising speeds without the unwanted interior resonance thanks to the unique purge chamber. Another benefit of the system is an increase in both horsepower and torque. A pair of bold, yet stylish 3.5” round rolled edge tips will be sure to give the truck a distinctive look. With unparalleled quality and attention to detail this 50 state emissions legal system is backed with B&B's limited LIFETIME warranty.