Make some space next to baseball, mom and apple pie: Flowmaster American Thunder Exhaust Systems belong on the list of beloved things that define the Red, White and Blue.
You don't just get some sound and a little power with Flowmaster's most popular kits—you get overwhelming horsepower gains, a handy boost in MPGs, and the most famous full-volume exhaust tone in the automotive world. Not to mention, each Flowmaster American Thunder Exhaust is custom-bent from quality aluminized steel to fit your specific year, make and model.
Best yet, Flowmaster American Thunder Exhausts give you configurations choices. Pick from single or dual kits, side or rear exits, or even specialty pipes made just for your ride. Each is powered by a renowned Flowmaster chambered muffler and comes with all the parts you need for a quick install.
Loud, powerful and uniquely American. Bolt-on your own American Thunder today!
- The Flowmaster American Thunder Exhaust System is custom-crafted for your specific year, make and model
- Boldly blasts the famous Flowmaster tone at full volume
- Available in single or dual, rear or side exit configurations for most vehicles
- Immediately boosts power by 5% - 10% on average, and helps save gas
- Powered by one of Flowmaster's track-proven chambered mufflers
- Mandrel-bent exhaust pipes for restriction-free flow
- All aluminized steel construction fights corrosion
- Includes a full hardware kit and detailed instructions—most kits can be installed at home
- Stainless tip(s) included with many American Thunder Systems
- Made in the USA
- Your Flowmaster American Thunder Exhaust System is backed by a 3-year warranty
- If you have more questions about this product, please Contact Us
Return Policy
Returns; Defective and Damaged Merchandise
Defective and freight damaged merchandise (but only where FlowSeriesExhaust.comis providing shipment) may be returned to FlowSeriesExhaust.comfor full credit, but only upon verification by FlowSeriesExhaust.comof such defect or damage. A Returned Merchandise Authorization ("RMA") form must be filled out by the Buyer and Approved by HyperTechPowerChips.com. Credit will be issued to Buyer upon receipt of the RMA form and the claim approval from the freight company.
Returns; Exchanges; Good Merchandise
Returns of good merchandise may be accepted by FlowSeriesExhaust.comin its sole discretion under the following conditions:
Return/Exchange of merchandise in totally re-saleable condition, without markings on the original packaging will be restricted to extraordinary circumstances with prior approval from HyperTechPowerChips.com. Accepted return will be assessed a 25% restocking charge. Returned part number shall not exceed 15% of total annual purchase quantities.
Return/Exchange of merchandise in packaging that has been marked, relabeled or otherwise defaced will be restricted to extraordinary circumstances with prior approval from your HyperTechPowerChips.com. Accepted return will be assessed a 30% restocking charge, except that FlowSeriesExhaust.commerchandise returned in packaging that has been marked, relabeled or otherwise defaced will be subject to a 40% restocking charge. Returned part number shall not exceed 15% of total annual purchase quantities.
Merchandise classified by FlowSeriesExhaust.comas TB (To Be Discontinued), or DC (Discontinued), may not be returned for credit.
Merchandise on sales promotion or inventory packages may not be returned for credit.
Buyer must pay all return transportation charges.
Buyer must obtain and complete an RMA form, issued by HyperTechPowerChips.com, for any good merchandise return or exchanges.
Returns/Exchanges will not be accepted under any circumstances after 15 calendar days after the ship date indicated by HyperTechPowerChips.com.
Any returns for non-fitment or quality issues will require high quality digital pictures of the products to be emailed to the account manager before an RMA is approved.
Order cancellations will take up to 48 hours after a cancellation is requested before the order is officially cancelled and money processed for return.