


Stainless Works 3.5in OD 4.25in Body 5in Length Race Muffler
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Stainless Works 3.5in OD 4.25in Body 5in Length Race MufflerRace muffler, Made from 304 stainless steel for maximum corrosion resistance. This muffler has 3 1 2" OD inlet and outlet with perforated core, 4 1 4" diameter round body with an overall length of 5" with a mill finish. These are TIG welded for strength and durability. These kits come with a Five year limited warranty and proudly made in the USA.
Quick Dispatch:
Your Stainless Works 3.5in OD 4.25in Body 5in Length Race Muffler orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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Perfect fit. Lasts as long as OEM for 25% of the price.
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Reviewed in the United States on December 27, 2025
★★★★★ 5
Great fit
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A Breath of Fresh Air for Your Car
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