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🔊 magnaflow 5x8 oval center/offset performance muffler exhaust 12259 - straight-through, 3" inlet/outlet, 24" length, satin finish - classic deep sound logo

🔊 MagnaFlow 5x8 Oval Center/Offset Performance Muffler Exhaust 12259 - Straight-Through, 3" Inlet/Outlet, 24" Length, Satin Finish - Classic Deep Sound Review

8

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Very good

Revainrating 5 out of 5  
Rating 
4.8
🔊 Exhaust Systems & Parts, 🏎️ Performance Car Parts & Accessories

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Description of 🔊 MagnaFlow 5x8 Oval Center/Offset Performance Muffler Exhaust 12259 - Straight-Through, 3" Inlet/Outlet, 24" Length, Satin Finish - Classic Deep Sound

BRUSHED SATIN FINISH - The brushed satin finish of this universal performance muffler will upgrade the appearance of your vehicle's exhaust system thanks to its premium aesthetic. DEEP SIGNATURE MAGNAFLOW SOUND - This universal muffler is engineered to produce the deep resonant exhaust tone that MagnaFlow is famous for. UNIVERSAL FIT - The universal configuration of this performance muffler means that cutting, fabrication and/or welding may be required. MagnaFlow recommends professional installation. STAINLESS STEEL CONSTRUCTION - Highly corrosion resistant, stainless steel construction incorporating CNC precision robotic manufacturing for quality fitment and longevity. Built to be the exhaust that lasts the lifetime of your vehicle. LIMITED LIFETIME CONSTRUCTION WARRANTY - Performance that lasts. Enjoy worry-free ownership knowing that you're backed by MagnaFlow’s limited lifetime construction warranty.

Reviews

Global ratings 8
  • 5
    6
  • 4
    2
  • 3
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Type of review

Revainrating 4 out of 5

Installed on Chevy Silverado 5.3 2016

The design of the exhaust is excellent, the package arrived without damage. If you want a loud exhaust, this isn't it. This changed the note of the exhaust and gave it a nice buzz. Sounds good at idle and full throttle. If you are looking for a quality muffler to replace your stock muffler then this is a great choice!

Pros
  • Everything is fine!
Cons
  • There are some nuances

Revainrating 5 out of 5

Nice low growl, best in mufflers

Installed on 2018 RAM 1500 300hp 3.6L engine. Welded instead of a normal silencer. The factory resonator has remained. Paired with a K&N air filter. Got 2 mpg in the first week. There is no drone in the cabin. Sounds great at startup. Not Hemi, but sounds a bit meaty. The exhaust store charged me $115 for the installation. $600 cheaper than a Magnaflow LOL Cat Back. GREAT choice for V6 Ram

Pros
  • Tough finish
Cons
  • New Competitors

Revainrating 5 out of 5

Required for V10 without Cat direct exhaust.

I installed the Speed Y pipe, removed the cat and muffler on my V10 Excursion. It sounded like a screeching trumpet in WOT. I've watched ALL the exhaust videos on youtube and found no satisfaction. So I consulted with a friend who made exhausts and he recommended this muffler. That helped. No more hoarse or glassy sound. Softens without loss of performance.

Pros
  • Easy to use
Cons
  • Protection

Revainrating 4 out of 5

Great sound, could have more detailed instructions

We really like the sound of this muffler when we installed it but a few details could be added in the installation guide. Perfect volume in my opinion, just enough to hear when cruising around town and it sounds very harsh when I step on the gas pedal, but quiet enough at cruising speed to carry on conversations or calls. Best of all, there's no hum (at least not yet)!

Pros
  • Easy installation
Cons
  • Updates

Revainrating 5 out of 5

Sounds great on Hemi 5.7L

Installed on my 2004 RAM 1500. I didn't remove the resonator so it's pretty quiet at idle. At idle it is very similar to stock. However, when you put it under load and hit around 2000 rpm, it sounds amazing. Good deep throaty rumble. Maybe at some point I'll remove the resonator to make it a bit louder, but so far I like it. Absolutely no drone at any speed. I love the fact that it is high quality stainless steel. I am very satisfied with my decision for the Flowmaster.

Pros
  • Easy to read control panel
Cons
  • Some cons

Revainrating 5 out of 5

Good sound with no hum.

Magnaflow 12259 2018 Chevrolet Silverado 18" muffler low hum on take off. Good sound in WOT no drone at any speed even when using it in v4 mode in the flap and in I left resonator. Sounds good but not loud. I also ordered 2 x 3" x 2.75" stainless steel adapters. Please note my muffler is in front of the muffler. This muffler lets you know what's under on your V8 hood!UPDATE Today I removed the resonator and had a piece of stainless steel tubing welded in, now the truck sounds great!FYI, I left…

Pros
  • Great for a small home
Cons
  • Questionable purchase for the elderly

Revainrating 5 out of 5

Deep rumble, best in mufflers

Amazing. Installed on 2013 Sierra 5.3. Nice deep rumble, nothing crazy like straight whistles. did not seek the status of an idiot. But definitely barks when you push the skinny peddler. TO UPDATE:. After having it on my truck for over a year it got a little louder over time but mostly deeper and all in a good way! They're going through a "breaking in period" or something, and they're definitely improving over time. My Beance crashed into a truck and got a 2014 Sierra. I will buy it again…

Pros
  • Great price
Cons
  • Big and bulky

Revainrating 5 out of 5

Best sounding muffler I've ever had

I've always had a Dodge and a Jeep and have always used Flowmaster mufflers. I've had most of the different series they make and really liked the sound. But now I have a Hemi 5.7 in the Jeep and I've tried a 50 Series Flowmaster and it sounded great at idle but had a rattling noise at 1200-1500 rpm. The bad news is that the Hemi takes about 30 seconds on a cold start remains in this speed range. It's loud, obnoxious and sounds like crap. I tried putting a resonator, it helped, but the rattle…

Pros
  • Very fast delivery
Cons
  • Crumpled