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- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 8 - Jul 13
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Description
MagnaFlow Muffler Mag SS 11X4X9 2.25 D/DThe MagnaFlow 4 X 9in. Oval Straight Through Performance Exhaust Muffler 11378 is engineered to enhance your ride with a healthy helping of our signature exhaust sound and dyno proven performance thanks to its free flowing straight through perforated stainless steel core wrapped in stainless steel mesh and acoustic fiber fill. The reversible, universal 2. 25 2. 25in. diameter inlet outlet Straight Through layout allows you to install it in whatever
The MagnaFlow 4 X 9in. Oval Straight-Through Performance Exhaust Muffler 11378 is engineered to enhance your ride with a healthy helping of our signature exhaust sound and dyno-proven performance thanks to its free-flowing straight-through perforated stainless steel core wrapped in stainless steel mesh and acoustic fiber fill. The reversible, universal 2.25/2.25in. diameter inlet/outlet Straight-Through layout allows you to install it in whatever orientation and configuration you see fit. However, professional installation is highly recommended. Muffler 11378s weight-optimized 4x9x11in. oval-shaped body features a satin finish that elevates the overall aesthetics of your current exhaust setup. 11378 is made of durable, corrosion resistant stainless steel and produced using cutting-edge CNC precision robotic manufacturing techniques, all backed by MagnaFlow's limited lifetime construction warranty.Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 2198 reviews
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Product Reviews
★★★★★ 5
Perfect fit
Perfect fit for my Accord
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Reviewed in the United States on February 15, 2026
★★★★★ 4
That it filters out debris in the air from going into the engine / cabin
It’s an air filter seems to be doing what it is designed for
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Reviewed in the United States on March 9, 2026
★★★★★ 5
Wonderful
Excellent
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Reviewed in the United States on January 15, 2026
★★★★★ 5
DIY savings
Saved myself $90!
Fit like a glove great value
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Reviewed in the United States on September 22, 2025
★★★★★ 5
Good
Looks to be good quality. Easy install.
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Reviewed in the United States on September 12, 2025