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MagnaFlow Exhaust Products

MagnaFlow Performance Exhaust Muffler 11385 | Deep Signature Sound, 4x9x14" Oval, Stainless Steel, 2.25"/2.25" Inlet/Outlet, Dual/Dual

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Availability: In Stock.
Fulfilled by Amazon
Arrives Thursday, Sep 17
Order within 13 hours and 32 minutes
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Size: 2.25 in. Inlet/Outlet


Features

  • SIGNATURE MAGNAFLOW SOUND - The 4" x 9" Oval body of muffler 11385 is engineered to deliver the deep, resonating sound that MagnaFlow mufflers are famous for.
  • DYNO-PROVEN PERFORMANCE - Extensive dyno testing is used to ensure that this 4" x 9" Oval muffler increases engine power and performance by improving the flow dynamics and evacuation of exhaust gases.
  • OPTIMAL ARCHITECTURE & CONSTRUCTION - The internal architecture of this muffler features a straight-through perforated core with two-stage acoustic packing which maintains the velocity of exhaust flow while generating a smooth, deep exhaust tone. Proudly made in the USA.
  • UNIVERSAL FITMENT - Universal design enables custom muffler placement and orientation to meet the particular spacing and mechanical requirements of your vehicle. Professional installation is highly recommended.
  • LIMITED LIFETIME CONSTRUCTION WARRANTY - Performance that lasts. Enjoy worry-free ownership knowing that you're backed by MagnaFlows limited lifetime construction warranty.

Description

Optimized weight and dyno-proven performance Stainless Steel construction for maximum durability and finish Backed by MagnaFlow's dedication in manufacturing products that are free of any defect Cutting and welding required for installation Fully reversible and featuring a free-flowing, straight-through perforated stainless steel core, stainless mesh wraps our acoustic fiber fill to deliver a smooth, deep tone for your custom exhaust project. MagnaFlow's dedication to engineering and manufacturing the finest exhaust systems makes for a superior sound and driving experience. Constructed of premium materials and carefully designed for the best fitment and performance, you can have confidence in making the right choice for your vehicle. Professional installation is highly recommended. May require custom fabrication, cutting and/or welding along with specific automotive knowledge.

Brand: MagnaFlow Exhaust Products


Material: Stainless Steel


Item dimensions L x W x H: 21.13 x 9.5 x 4.5 inches


Item Weight: 11 pounds


Configuration: Dual/Dual


Brand Name: MagnaFlow Exhaust Products


Manufacturer Part Number: 11385


UPC: 841380000712


Manufacturer: MagnaFlow Exhaust Products


Global Trade Identification Number: 12


Number of Items: 1


Included Components: Magnaflow 11385 Stainless Steel 2.25" Oval Muffler


Item Type Name: Magnaflow 11385 Stainless Steel 2.25" Oval Muffler


Model Number: 11385


Manufacturer Warranty Description: Limited Lifetime Construction Warranty


Item Dimensions: 21.13 x 9.5 x 4.5 inches


Item Weight: 11 pounds


Inlet Connection Size: 2.25 inches


Outlet Connection Size: 2.25 inches


Material Type: Stainless Steel


Shape: Oval


Configuration: Dual/Dual


OEM Equivalent Part Number: 11385


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Sep 17

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Great muffler
Size: 2.25 in. Inlet/Outlet
Works and fits correctly and sounds good
Reviewed in the United States on May 8, 2026 by James Lynch
    • Drone Killer!
Size: 2.5 in. Inlet/Outlet
I bought a used 2015 V6 Camarro that came with Flowmaster mufflers on the back. It sounded more like a souped up import than a muscle car and had a terrible drone right around 1700-2300 rpm a.k.a. highway cruising and wake the neighbors high idle. My wife was exhausted after a 1 hour drive and I got tired of setting off the car alarm in the little Honda that parks behind me. I added this muffled x pipe up stream and kept the Flowmasters in place. Nothing compares to the sound of a V8 with headers, but this unit took the raspy tuba out of the high range and gave it more of a growling idle. Definitely more "American" sounding. It stepped on that drone pretty good too. The obnoxious drone range pinched down to around 1900-2050 rpm and isn't as loud when it's in it. I still set of the Honda's alarm from time to time when he parks to close, but I took the wife on a 2 hour cruise through the mountains and she was happy with the reduction in noise. The car has a nice grunt when I step on it, but is much quieter in cruise, and if I use the paddle shifters to get further away from the droning range, it goes silent. I couldn't be happier with how this pipe balanced my car between daily driver and kept a good time when I want it. ... show more
Reviewed in the United States on October 22, 2019 by Nick
    • Exceded my expectations
Size: 2.5 in. Inlet/Outlet
Put on my 98 GMC seirra Z71 shortbed, regular cab, with brand new crate 5.7 vortec. Had true duels with no cats and two seperate flow master super 44s. Replaced the two super 44s with single Dual inlet, Dual outlet Magnaflow X-PIPE muffler. I was everything I was hoping for and then some. Its a bit quiter now but the overall sound is much better. More deep, smooth almost high performance v8 sound. I swear the truck has a noticeable amount of more power and seems to run smoother probably because the X pipe is evening out the flow, where b4 they never met. If your looking for a more deep distinguished high-performance sound as opposed to just loud, then this is the way to go. Fantastic Mufflers. ... show more
Reviewed in the United States on December 29, 2024 by Wes
    • Got rid of drone and rasp!!!
Size: 2.25 in. Inlet/Outlet
Sound excellent on my v6 camaro. It got rid of the rasp and drone even gives it a somewhat exotic sound vibe to it.
Reviewed in the United States on January 4, 2026 by Fatty Matty
    • Perfect sound on Maserati Granturismo
Size: 2.5 in. Inlet/Outlet
Removed the stock mufflers and resonator and used this xpipe muffler to replace the stock X pipe on my 09 Maserati Granturismo. Wasn't about to pay several thousand for a Larini exhaust. Some drone right at 2100rpm but otherwise no drone at any other RPM. Fantastic sound, opens things up and makes it truly sound like a 4.2 Italian V8. Deep and aggressive but more refined than an American V8 (not that there's anything wrong with that sound either) muffler build quality is excellent, which is to be expected from Magnaflow. Excellent welds and stainless steel, not worried about longevity. Magnaflow is always more expensive than it should be but it still beats the alternative. No noticeable power change either direction. ... show more
Reviewed in the United States on August 5, 2022 by Scott D
    • Perfect
Size: 2.5 in. Inlet/Outlet
Perfect !
Reviewed in the United States on June 22, 2026 by Felix Bernabe
    • Fits a 99 Chevy Silverado
Size: 2.5 in. Inlet/Outlet
It’s not too quiet but also not as loud as straight pipes yet still gives it a nice tone. The price isn’t bad overall but only thing I would complain about is that the welds could be better.. they aren’t as clean as the advertised photo.
Reviewed in the United States on August 6, 2024 by Alyssa Stechschulte
    • Exhaust
Size: 2.5 in. Inlet/Outlet
Installed and it sounds great! Thanks
Reviewed in the United States on February 26, 2026 by James Shalkowski

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