Flowmaster 67-70 Mustang American Thunder Thru Valance Exhaust System

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. The pair of specially selected Super 44 Series performance mufflers flows into 2.50-inch mandrel-bent tailpipes 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. All aluminized steel exhaust systems are covered by our 3-year Limited Warranty. If you prefer stainless steel construction, check out optional system# 817281 which is covered by out Lifetime Limited Warranty. Notes: Does Not fit convertibles or cars with staggered shocks. Does Not include header reducer cones or downpipes for factory manifolds.

• Does Not Include Header Reducer Cones or Downpipes for Factory Manifolds
• Super 44 Series Performance Mufflers for Deep Powerful Sound
• H-pipe Crossover for Maximum Power and a Deep Tone
• Includes Hangers and Hardware for Installation
• Mandrel-bent 16-gauge Aluminized Steel Tubing
• Aggressive to Moderate Exterior Exhaust Tone
• 3.00-inch Polished 304 Stainless Steel Tips
• Crossmember-Back True Dual Exhaust System
• Over 35+ Years of Flowmaster Quality
• 3-Year Limited Warranty

Vehicle Fitment

• 1967-1970 Ford Mustang

Please verify exact fitment for your trim and engine before ordering.

🚚 Vendor Direct Shipment: This item is not stocked in our warehouse and ships directly from the manufacturer. Please allow additional handling time before dispatch.

Manufacturer Part Number: 17281

Images are for illustrative purposes only. Actual product may vary.

⚠ WARNING (California Proposition 65): This product can expose you to chemicals which are known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov.