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Flowmaster 67-70 Ford Mustang, V8, Header-back, Super 44 Series Mufflers, Mandrel

Flowmaster 67-70 Ford Mustang, V8, Header-back, Super 44 Series Mufflers, Mandrel

Regular price $1,065.95
Regular price $1,199.95 Sale price $1,065.95
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In-stock orders are processed within 48 hours; transit time is additional.

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Need help with a return? Request authorization within 30 days of delivery for eligible unused, uninstalled items. See details for exclusions and applicable fees.

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Return details & how to start

Request return authorization (RMA) within 30 days of delivery for eligible items. Keep items unused and uninstalled, with original packaging and accessories. Electronics, liquids, special orders and other categories are excluded.

Email sales@frsport.com with RETURN and your order number in the subject to request an RMA. Please wait for return authorization before sending your item back.

Wrong part/size or change of mind: a 20% return processing fee applies, plus applicable shipping costs.

Original shipping is non-refundable. For orders shipped free, the actual outbound shipping cost is deducted from the refund. Return shipping is prepaid by the customer.

After payment capture, cancellations and refunds generally incur a 5% processing fee, except for our error, confirmed defects or confirmed carrier loss. The 5% and 20% fees do not stack; only the greater applicable fee applies. Store credit waives the 5% fee, but applicable return fees remain.

Missing, incorrect or transit-damaged items: report within 3 business days of receipt with photos of the product and packaging.

For defective items, contact us for help with the manufacturer's warranty process. The manufacturer decides the claim.

Specifications

Product details shared across all variants.

Product type
Exhaust System Kit
Category
Motor Vehicle Exhaust
Shipping weight
99.5 lb
Barcode
700042024759

Billable shipping weight; may include dimensional weight.

Header-back System 409S - Dual Rear Exit - American Thunder® - Aggressive Sound

Application Summary

Fits 1967 to 1970 Ford Mustang with a V8 engine, does not fit convertibles or cars with staggered shocks.

Features

For the person who is looking for a complete Header-back dual exhaust system with an aggressive tone. These systems are mandrel bent for maximum performance and include specially selected mufflers. American Thunder® systems deliver a moderate to aggressive interior and exterior tone and are suited to the enthusiast who wants their performance to be heard. Like all Flowmaster® systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation.

  • Mandrel bent 16 gauge stainless steel tubing
  • Aggressive Sound Exterior Exhaust Tone
  • Includes hangers and hardware for easy installation
  • Header-back System
Product Attributes
2WD/4WD 2WD Muffler Part Number Kit Only
Single Dual Dual Inlet Diameter (in) 2.5
System Type Header-back System Exhaust Series American Thunder®
Heat Shield No Material Stainless Steel
Outlet Diameter (in) 2.5 Tubing Diameter (in) 2.5
Muffler Series Super 44 Series Exit Position Dual Rear Exit
Muffler Quantity 2 Sound Level Aggressive Sound
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Vehicle fitment