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Home / Exhaust / Catback / Flowmaster 67-70 Mustang American Thunder Under Valance Exhaust System
Flowmaster 67-70 Mustang American Thunder Under Valance Exhaust System
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Flowmaster

Flowmaster 67-70 Mustang American Thunder Under Valance Exhaust System

PART 17282CATEGORY Catback
$849.95
MSRP $956.95You save $107.00
$849.95
1

Product information

Manufacturer information. Check the part number and installation requirements for your vehicle.

Supplier details checked 2026-09-23 · Test catalog

Product description

1967-1970 Ford Mustang with V8 engine, 2.5" pipes - Aggressive sound

Flowmaster American Thunder Crossmember-Back Exhaust System

Features

Does Not Include Header Reducers or Downpipes for Factory Manifolds

H-pipe Crossover for Maximum Power with a Deep Tone

Super 44 Series Mufflers for Deep Powerful Sound

Includes Hangers and Hardware for Installation

Mandrel-bent 16-gauge Aluminized Steel Tubing

Moderate to Aggressive Exterior Exhaust Tone

Crossmember-Back True Dual Exhaust System

3-Year Limited Warranty

Manufacturer notes

Fits 1967-1970 Ford Mustang with V8 engine. Does not fit convertibles, staggered shock models, or cars with valance cutouts.

Supplier category
Exhaust, Mufflers & Tips
Supplier subcategory
Catback
UPC / barcode
700042021666
Units per product
1
Supplier Proposition 65 status
N
Supplier EPA status
N/A
Air freight prohibited
No
Not CARB approved
No
CARB acknowledgement required
Yes
Freight delivery required
No
Powersports product
No
More manufacturer information

Other product descriptions

Flowmaster 67-70 Mustang American Thunder Under Valance Exhaust System

6770 MUSTANG AMT UNDER VALNCE

SYS 67-70 MUSTANG AM

About the manufacturer

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 aluminized steel tubing with a built-in H-pipe crossover, a pair of specially selected Super 44 Series performance mufflers for a deep powerful sound. The 2.50-inch mandrel-bent tailpipes feature a slight turndown at the rear bumper and the system includes all hangers and hardware necessary for installation. 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. All aluminized steel exhaust systems are covered by our 3-year Limited Warranty. If you prefer stainless steel construction with a Lifetime Limited Warranty, check out exhaust system# 817282. Notes: This system Does Not fit convertibles, cars with staggered shocks or exhaust cutouts in the rear valance. Does Not include header reducer cones or downpipes for factory manifolds.

Additional manufacturer information

SYS 67-70 MU

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