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Supplier details checked 2026-09-23 · Test catalog
Fits 2015-2020 Ford F-150 with 2.7L/3.3L/3.5L Ecoboost, 3.5L TiVCT or 5.0L engine. - Aggressive sound
Flowmaster Outlaw Cat-back Exhaust System
Large 4.00-inch Black Ceramic Coated Tips
Includes Rear and Side Tailpipes Exits
Super 10 Series Performance Muffler
Stainless Steel Construction
Lifetime Limited Warranty
Super Aggressive Sound
Flowmaster Quality
Does Not fit Std Cab/Short Bed or Ford Raptor.
Flowmaster 15-20 F150 2.7L/3.5L/5.0L Outlaw SS Cat-Back Exhaust System
1520 F150 27L35L50L OTL DORS 409S
SYS 15-20 F150 2.7L/
Flowmaster's Outlaw Cat-back exhaust system for the 2015-2020 Ford F-150 is perfect for the person looking for an aggressive exterior sound level while maintaining a moderate interior sound with all of the performance benefits that you would expect from Flowmaster. This bolt-on 409S stainless steel system fits all F-150's with the 2.7L/3.3L/3.5L Ecoboost, 3.5L TiVCT and 5.0L engines. Features include a 3.00-inch mandrel-bent inlet tube flowing into an aggressive Super 10 series performance muffler with dual 2.50-inch mandrel-bent tailpipes. The finishing touch is the large 4.00-inch black ceramic coated stainless steel tips. The system comes with your choice of final tailpipe exits, either out the rear under the bumper for a muscular, or out the sides behind the rear tires if you tow an RV, boat or trailer. This system fits all 2/4 WD and Wheelbases, except Standard Cab/Short Bed models. Designed for an easy fit, this system includes all necessary parts, hardware for an easy installation you can do at home.
SYS 15-20 F1
