









🔥 Unleash the beast beneath your ride – sound and strength that can’t be ignored!
The Flowmonster 425403-FM 2-Chamber Muffler delivers a powerful, aggressive exhaust tone by utilizing a 2-chamber internal design that cancels high-pitch frequencies. Crafted from durable 16-gauge aluminized steel and fully MIG welded, it ensures long-lasting strength and performance. Designed for vehicle-specific fitment, it enhances exhaust flow for improved throttle response, making it the perfect upgrade for drivers seeking both sound and durability.
| ASIN | B07X62LZ4T |
| Best Sellers Rank | #384,065 in Automotive ( See Top 100 in Automotive ) #363 in Automotive Replacement Exhaust Mufflers |
| Brand Name | Flowmaster |
| Compatible with Vehicle Type | Car, Truck |
| Configuration | Center/Dual |
| Customer Reviews | 4.5 4.5 out of 5 stars (144) |
| Included Components | Flowmonster 2-Chamber Small Muffler |
| Item Dimensions | 13 x 9 x 4.75 inches |
| Item Type Name | Flowmonster 2-Chamber Small Muffler |
| Item Weight | 0.1 Kilograms |
| Manufacturer | Flowmaster |
| Manufacturer Part Number | 425403-FM |
| Material Type | Alloy Steel |
| Model Number | 425403-FM |
| Shape | Oval |
| UPC | 090127063279 |
| Unit Count | 1.0 Count |
M**E
Sounds good
Sounds good. Would buy again.
A**N
Great quality!
I needed to replace my muffler as it came apart. It was a stamped steel cheapo. I cannot believe the quality for the money of this muffler. Fully welded body and a decently thick gauge steel. This muffler should hold up for a long time. Sounds pretty good as well. A little louder than I wanted, but I am still very happy with my purchase.
D**E
Mellow muffler.
This is a well made muffler and nice welds. Hard to find 2 inlets and 1 outlet for my 2000 dodge 2500. Already installed and really sounds good.
K**R
Sounds great on our 2002 yukon xl
Very deep sound but not too loud
C**R
Great price
Great price and work for us to replace on our vehicle so no more loud exhaust
C**R
2 into 1 flow monster
Great muffler! Sounds great too.
D**N
Great price
Fit perfectly good quality 2012 Toyo tundra
C**L
Nice sound
Good value, easy to install on my 2011 tundra 4.6 liter. A little louder than stock with a clean rumble.
R**L
Très résistant et très bon son
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