Flowmaster · New

Flowmaster 15-20 F150 2.7L/3.5L/5.0L American Thunder SS Cat-Back Exhaust System

Name: Flowmaster 15-20 F150 2.7L/3.5L/5.0L American Thunder SS Cat-Back Exhaust System
Brand: Flowmaster
SKU: flo817725
Price: 1318.95 USD

MPN 817725 · Store SKU flo817725

$1,318.95

IN STOCK1 ready to ship

Supplier stock checked 11/8/2026, 3:55:06 AM UTC. Adding a part does not reserve it.

30-day returns for unopened, unused new parts

Request a return within 30 calendar days after delivery. New parts must be unopened and unused.

Shipping & returns ↗This policy does not limit rights required by law.

Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.

Product details

Flowmaster's American Thunder 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 a Super 40 series performance muffler with dual 2.50-inch mandrel-bent tailpipes. The finishing touch is the polished 3.50-inch 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. Designed for an easy fit, this system includes all necessary parts, hardware for an easy installation you can do at home. Notes: This system fits all 2/4 WD and all Wheelbases, except Standard Cab/Short Bed. 2015-2020 Ford F-150 with 2.7L/3.3L/3.5L Ecoboost, 3.5L TiVCT or 5.0L engine. Flowmaster American Thunder Cat-back Exhaust System

Manufacturer fitment & guides

Check 817725 against the manufacturer’s application information below.

A manufacturer application guide is not available for this listing. Request the exact application from JuiceBuilt before payment.

Part-specific notes

Emissions acknowledgement required before purchase.
California Proposition 65: Y

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What is the return policy?

Request a return within 30 calendar days after delivery. New parts must be unopened and unused.

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This policy does not limit rights required by law.

Flowmaster 15-20 F150 2.7L/3.5L/5.0L American Thunder SS Cat-Back Exhaust System

Product details

Manufacturer fitment & guides

Part-specific notes

THE NEXT PART
OF YOUR BUILD.

Free shipping on $100+ orders.

Build with the right brands.

Shop your platform.

Shop by parts section.

Find your next upgrade.

Make the whole setup work.

A few things to know.

Your cart.

Freight & oversized shipping quote

Delivery address