Flowmaster · New

Flowmaster 67-70 Mustang American Thunder THRU VALANCE SS Crossmember-Back Exhaust System

Name: Flowmaster 67-70 Mustang American Thunder THRU VALANCE SS Crossmember-Back Exhaust System
Brand: Flowmaster
SKU: flo817281
Price: 1124.95 USD

MPN 817281 · Store SKU flo817281

$1,124.95

CHECK AVAILABILITY0 in supplier warehouses. Ask JuiceBuilt about availability.

Supplier stock checked 11/8/2026, 6:01:40 AM UTC. Adding a part does not reserve it.

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

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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

For the person who is looking for a true dual Crossmember-Back exhaust system with an moderate to aggressive exhaust tone. With an easy fit in mind, these systems are constructed from 16-gauge mandrel-bent stainless steel tubing with a built-in H-pipe crossover, a pair of specially selected Super 44 Series mufflers and includes all hangers and hardware necessary for installation. This system fits through the factory rear valance exhaust cutouts and includes a pair of 3.00-inch polished stainless steel tips. The American Thunder systems deliver a moderate to aggressive interior and exterior tone and are best suited to the enthusiast who wants their performance to be heard. Like all Flowmaster exhaust systems, the benefits include improved throttle response, power and mileage. If you prefer aluminized steel construction, check out optional system# 17281. Notes: Does Not fit convertibles or cars with staggered shocks. Does Not include header reducer cones or downpipes for factory manifolds. Fits 1967-1970 Ford Mustang with V8 engine. Stainless Steel. - Aggressive to moderate sound Flowmaster American Thunder Crossmember-Back Exhaust System

Manufacturer fitment & guides

Check 817281 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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Flowmaster 67-70 Mustang American Thunder THRU VALANCE SS Crossmember-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