--- product_id: 409271017 title: "NEW FLOWMASTER 40 SERIES CHAMBERED MUFFLER,OVAL,BLACK,DUAL 2.5\" INLET & OUTLET,19\" OVERALL LENGTH" brand: "flowmaster" price: "€ 306.31" currency: EUR in_stock: true reviews_count: 9 category: "Flowmaster" url: https://www.desertcart.sk/products/409271017-new-flowmaster-40-series-chambered-muffler-oval-black-dual-2 store_origin: SK region: Slovakia --- # 19" compact oval design Aggressive dual 2.5" inlet/outlet sound Durable 16-gauge aluminized steel NEW FLOWMASTER 40 SERIES CHAMBERED MUFFLER,OVAL,BLACK,DUAL 2.5" INLET & OUTLET,19" OVERALL LENGTH **Brand:** flowmaster **Price:** € 306.31 **Availability:** ✅ In Stock ## Summary > 🔊 Unleash the roar that sets you apart—Flowmaster 40 Series, where power meets precision. ## Quick Answers - **What is this?** NEW FLOWMASTER 40 SERIES CHAMBERED MUFFLER,OVAL,BLACK,DUAL 2.5" INLET & OUTLET,19" OVERALL LENGTH by flowmaster - **How much does it cost?** € 306.31 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/409271017-new-flowmaster-40-series-chambered-muffler-oval-black-dual-2) ## Best For - flowmaster enthusiasts ## Why This Product - Trusted flowmaster brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Fully MIG welded 16-gauge aluminized steel construction ensures unmatched durability and corrosion resistance. - • **Sleek Oval Profile:** Compact 19" overall length with an oval shape fits seamlessly under your ride without sacrificing performance. - • **No Drone, Just Power:** Engineered for that perfect balance—loud enough to turn heads, quiet enough to avoid annoying cabin drone. - • **Iconic Flowmaster Roar:** Experience the legendary aggressive tone that commands attention on street, strip, or off-road. - • **Precision Fit Dual Inlets:** Dual 2.5" pipe connections deliver optimized exhaust flow and a powerful sound profile. ## Overview The Flowmaster 40 Series Chambered Muffler features a durable 16-gauge aluminized steel oval body with dual 2.5" inlet and outlet pipes, delivering an aggressive yet refined exhaust tone. Designed for street, strip, and off-road use, its compact 19" length and fully welded construction ensure long-lasting performance and a perfect fit for cars and trucks seeking that iconic Flowmaster sound without drone. ## Description The Original 40 series muffler delivers an aggressive exterior and interior tone. If you're looking for that original Flowmaster sound this is the muffler is for you. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability. Features: No internal packing to blowout Excellent Street/Strip and Off Road application Aggressive Sound Exterior Exhaust Tone Durable fully welded 16 gauge aluminized steel Review: Great American sound . - Great sound not to loud just right no horrible drone sounds perfect on my 2017 Nissan Titan XD Review: Sound good - Sound good on chevy 5.3 ## Features - Body Height (in) 4 Body Length (in) 13 Body Width (in) 9.5 Brand Flowmaster - California Proposition 65 Required No Emission Code 5 Inlet Connection Type Pipe Connection Inlet Diameter (in) 2.5 - Inlet Position Dual Material Aluminized Steel Muffler Series Original 40 Series Outlet Diameter (in) 2.5 Outlet Position Dual - Product Type Street Mufflers Shape Oval Sound Level Aggressive Sound Part Number 425404 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09BP6D6WM | | Best Sellers Rank | #507,576 in Automotive ( See Top 100 in Automotive ) #533 in Automotive Replacement Exhaust Mufflers | | Brand | Flowmaster | | Brand Name | Flowmaster | | Compatible with Vehicle Type | Car, Truck | | Customer Reviews | 4.7 out of 5 stars 155 Reviews | | Item Dimensions | 20.5 x 9.8 x 4.6 inches | | Item Weight | 8.75 Pounds | | Item dimensions L x W x H | 20.5 x 9.8 x 4.6 inches | | Manufacturer | Flowmaster | | Manufacturer Part Number | FLM-425404 | | Material | Alloy Steel | | Material Type | Alloy Steel | | Model Number | FLM-425404 | | Shape | Oval | | Vehicle Service Type | Car, Truck | ## Product Details - **Brand:** Flowmaster - **Vehicle Service Type:** Car, Truck - **Shape:** Oval ## Images ![NEW FLOWMASTER 40 SERIES CHAMBERED MUFFLER,OVAL,BLACK,DUAL 2.5" INLET & OUTLET,19" OVERALL LENGTH - Image 1](https://m.media-amazon.com/images/I/613ouzROSQL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great American sound . *by D***E on October 26, 2025* Great sound not to loud just right no horrible drone sounds perfect on my 2017 Nissan Titan XD ### ⭐⭐⭐⭐⭐ Sound good *by J***S on October 19, 2025* Sound good on chevy 5.3 ### ⭐⭐⭐⭐⭐ Good deal *by R***S on February 16, 2026* Sounds really good on my tundra definitely worth it ## Frequently Bought Together - NEW FLOWMASTER 40 SERIES CHAMBERED MUFFLER,OVAL,BLACK,DUAL 2.5" INLET & OUTLET,19" OVERALL LENGTH - EVIL ENERGY 2.5 Inch Exhaust Clamp,2 1/2" Butt Joint Band Clamp Sleeve Coupler Stainless Steel for Pipes,Mufflers,Catalytic Converters 4PCS - 2.5'' Mild Steel Custom Exhaust Kit Tubing Mandrel Bend Pipe Straight & U-Bend 16 Gauge Universal 8PCS --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sk/products/409271017-new-flowmaster-40-series-chambered-muffler-oval-black-dual-2](https://www.desertcart.sk/products/409271017-new-flowmaster-40-series-chambered-muffler-oval-black-dual-2) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-08-12*