17367 For the person who wants the aggressive look of a NASCAR race truck along with all the benefits that a Flowmaster Cat-back exhaust system provides. D.O.S.S. (Dual out same side) systems are the perfect choice. This American Thunder system features a Super 50 Series performance muffler that delivers a moderately aggressive exterior sound with a moderate interior tone, which is suited to the enthusiast who wants their performance to be heard. The dual 2.50-inch mandrel-bent tailpipes exit in front of the right side rear tire and are finished off with dual 3.00-inch polished stainless steel tips. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, the system includes all necessary parts and hardware for easy installation and is covered by our 3-year Limited Warranty. Features: Includes Hangers and Hardware for an Easy Installation Mandrel-bent 16-gauge Aluminized Steel Tubing Moderately Aggressive Exterior Exhaust Tone Dyno Tuned for Maximum Performance Super 50 Series Performance Muffler Uses the Factory Hanger Locations 3-year Limited Warranty Easy Installation About Flowmaster Flowmaster® is a household name, and for good reason. They've built legendary exhaust systems and mufflers for decades, and now offer performance air intakes, catalytic converters, and headers to give your hot rod performance to match the iconic Flowmaster sound. SPECS 2WD/4WD 2WD/4WD Brand Flowmaster Emission Code 5 Exhaust Series American Thunder Exit Position Dual Same Side Exit Heat Shield No Inlet Diameter (in) 2.5 Inlet Position Dual Material Aluminized Steel Muffler Part Number Kit Only Muffler Quantity 1 Muffler Series 50 Series HD Outlet Diameter (in) 2.5 Product Type Exhaust System Single Dual Dual Sound Level Aggressive / Moderate System Type Cat-back Tip Diameter (in) 4 Tip Quantity 2 Tubing Diameter (in) 2.5 UPC 700042018901 California Proposition 65 Chemical Name Chromium (hexavalent compounds) Nickel (Metallic) California Proposition 65 Required Yes Part Number 17367 EMISSIONS 5 This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations. TECH RESOURCES Instructions for Part# 17367 Warranty for Part# 17367 Fits 1999-2004 Ford Lightning with 5.4L supercharged engine, fits 2/4 wheel drive.