SKU: 4143942000

MagnaFlow Muffler Mag SS 11X4X9 2.25 D/D

$94.50 $105.00
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  • USA
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Ships within 48 hours · Estimated delivery Aug 4 - Aug 9

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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.

  • Delivers a Smooth, Deep Tone
  • Delivers A Smooth-Deep Tone
  • Mufflers Are Bi-Directional
  • 100 Percent Stainless Steel
  • 100% Stainless Steel
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 4143942000

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4.5 ★★★★★
Based on 14 reviews
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R
Verified Purchase
Roger
Massapequa, US
★★★★★ 5
Great Quality
Size: 2 Channel-3 ft, Size: 2 Channel-3 ft
Outstanding quality a very reasonable price. I was able to check the headunit RCA was showing almost 5 volts which was rated on the output of the headunit. I’m not an expert however i am assuming you don’t have to add so much gain. I’m very pleased and i will save this seller.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 25, 2026
J
Verified Purchase
Joseph Bragg
Battle Creek, US
★★★★★ 5
Pretty good cables for what they are
Size: 2 Channel-3 ft
I purchased these Skar Audio cables here on Amazon because they were an outstanding price. They shipped very quickly. When I open the package mind you they do work pretty good but when I open the package I've noticed that the gold plated connecting points that are supposed to connect to your amplifier and your receiver are a little flimsy and don't fit as tight as they're supposed to so I was concerned that bumps on the road whatever would cause them to loosen up so I had to squeeze them together a little bit so I can make them fit tighter on the amplifier but so far so good and I've had no problems with them. I've had no weird humming no weird crackling or any kind of connection issues whatsoever since I've done this. Just something to take note. Other than that, for the price these are pretty good cables and if you want to spend a little more here on Amazon you can get better cables. I know Skar Audio makes pretty good speakers for what they're worth and they definitely make pretty decent amps. I'm just not quite sure about there quality on cables and such. Just my honest opinion. I know people that love everything that they make so it's all subjective and a matter of opinion. Would I recommend them? For the price definitely.
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Reviewed in the United States on November 13, 2023
J
Verified Purchase
Johnathan Petty
Boise, US
★★★★★ 4
Quality
Size: 2 Channel-12 ft
Good rca’s
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Reviewed in the United States on March 12, 2026
B
Verified Purchase
BP-JP
Phoenix, US
★★★★★ 5
Another Quality Product from Skar Audio
Size: 1-Female to 2-Male Y-Adapter-1 ft
High Quality RCA. I needed a 1 Male to 2 Female RCA Y adapter, and me not reading correctly ordered this. However - I managed to make this work at my AMP instead of the head unit. Great sound quality, Cable is a good gauge and matches my RCA's already ran in the car. Connects easy and had this installed within minutes. Thanks Skar!
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Reviewed in the United States on October 11, 2025
P
Verified Purchase
Phillip Morris
Chelsea, US
★★★★★ 5
Works as intended.
Size: 2 Channel-3 ft
Needed a short cable to run from stereo to pac-1 level knob. Works as it should.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 13, 2026

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