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๐Ÿ”Š flowmaster 8425152 super 10 muffler 409s - aggressive sound, black - 2.50 center in / 2.25 dual out - top performance upgrade logo

๐Ÿ”Š Flowmaster 8425152 Super 10 Muffler 409S - Aggressive Sound, Black - 2.50 Center IN / 2.25 Dual OUT - Top Performance Upgrade Review

4

ยท

Very good

Revainrating 4.5 out of 5ย ย 
Ratingย 
4.5
๐Ÿ”Š Exhaust Systems & Parts, ๐ŸŽ๏ธ Performance Car Parts & Accessories

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Details

BrandFlowmaster
MaterialStainless Steel
Item Weight6.5 Pounds
ShapeOval

Description of ๐Ÿ”Š Flowmaster 8425152 Super 10 Muffler 409S - Aggressive Sound, Black - 2.50 Center IN / 2.25 Dual OUT - Top Performance Upgrade

Super 10 series. Super aggressive sound level. 409 stainless steel construction. Delta Flow technology for maximum scavenging effect. Outlet Diameter:2.250 inch. Fit type: Universal Fit.

Reviews

Global ratings 4
  • 5
    2
  • 4
    2
  • 3
    0
  • 2
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  • 1
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Type of review

Revainrating 5 out of 5

Aggressive and requires attention

I half thought it might be too loud just based on the muffler size and some reviews. But after installing it in my 2016 RAM 1500 5.7 HEMI I would recommend it to all RAM owners who want a low average hum! I bought this and replaced the original muffler, left the rest of the factory resonators and that's it! The best sound I've ever heard, even better than the 40 and 44 series Flowmaster. Should be IMO.

Pros
  • Easy install
Cons
  • Not sure

Revainrating 4 out of 5

Use a smaller muffler than planned

Generally everyone chooses 2.5" inlets and outlets, although in reality, especially with this type of muffler, there are few limits to help with the back pressure "There are literally 2 small baffles welded into this muffler. What I found is that you end up getting unwanted noise/tones out of the exhaust pipe. It sounds like you have You just cut off the exhaust pipe on the CAT.Especially With the one-inlet two-outlet muffler like this one,reduce the diameter of the outlet a little and you'llโ€ฆ

Pros
  • Consistent test results
Cons
  • Mostly good, but...

Revainrating 4 out of 5

I have it on sale so *shrugs*

The first thing I noticed was a very noticeable amount of overspray and it looks like they dropped it onto the still wet cardboard because the cardboard stuck to the entire paint . . There are also a few exposed spots along the seams and welds where the paint is starting to peel as well. So. for $54 it's good, I'll just tint it with high temp paint but it definitely feels like a mass produced product. "I don't care, just sell it." A few welds look like Bubba with an extension, but as long asโ€ฆ

Pros
  • Hands free
Cons
  • Some trouble

Revainrating 5 out of 5

I got the wrong one

Description says 2.50 Center IN / 2.25 Dual OUT but I have 2.50 Center IN / 2.50 Dual OUT. to customize it and then turn it into what I need (probably more money out of my pocket thanks to this failure). By the way, this is the second time I have ordered from Flowmaster/Holley and for some reason they are always sold out. Also all mufflers I received are MADE IN CHINA. I'm not crazy about US made products, but when I see "MADE IN AMERICA/USA" I expect to receive a US made product, don't youโ€ฆ

Pros
  • Free for educational purposes
Cons
  • Hard to tell