All the power and performance of Flowmaster's muscular mufflers without the roaring interior resonance—that's the idea behind their 40 Series Delta Flow Muffler. It's the ideal pick for late-model performance cars that want powerful exterior tone while enjoying a quieter ride.
At the heart of the 2-chamber design is Flowmaster's exclusive Delta Flow technology. This innovative engineering utilizes precision-placed deflectors that not only mute interior sound, they fuel increased exhaust scavenging for the most possible power.
Also ideal for dual exhaust cruisers, the Flowmaster 40 Series Delta Flow Muffler boasts the quality construction you'd expect from Flowmaster. Each Flowmaster Muffler is built with 16-gauge aluminized steel for corrosion resistance and fully mig-welded for maximum durability. Best yet, your Flowmaster 40 Series Delta Flow Muffler boasts a 3-year warranty.
Flowmaster 40 Series Delta Flow Mufflers come in a variety of inlet/outlet configurations and sizes, shown above. Select the inlet/outlet diameter you need from the drop down at right.
Select 40 Series Delta Flow model configurations are available with T-409 stainless steel construction instead of aluminized steel for extending protection against corrosion and yellowing.
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.