★★★★★ 5
Commfrotable and warm
Size: Large, Color: Dark Grey
Very light weight and comfortable.
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Reviewed in the United States on March 12, 2026
Borla Universal Center/Offset Oval 2.25in Tubing 14in x 4in x 9.5in PRO-XS Notched Muffler
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Borla Universal Center/Offset Oval 2.25in Tubing 14in x 4in x 9.5in PRO-XS Notched MufflerSKU: 400478 UPC: 808422004787 Borla ProXS Muffler 2. 25in Offset Inlet 2. 25in Center Outlet 4in x 9. 5in Oval x 14in Long Body Notched Necks #400478 The Borla 400478 ProXS Muffler is a universal oval performance muffler for custom 2. 25 inch exhaust systems on cars, trucks and SUVs. It provides the Borla Sound of Power for enthusiasts, with gains in horsepower, torque, fuel economy and engine longevity. Reversible design and notched necks ensure easy
Quick Dispatch:
Your Borla Universal Center/Offset Oval 2.25in Tubing 14in x 4in x 9.5in PRO-XS Notched Muffler orders ship within 1-2 business days.
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- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
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You'll receive a tracking link by email once your Borla Universal Center/Offset Oval 2.25in Tubing 14in x 4in x 9.5in PRO-XS Notched Muffler ships.
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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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4.4 ★★★★★
Based on 483 reviews
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Product Reviews
★★★★★ 5
Right size item
Size: Small, Color: Light Grey
Make sure you order the right size. I received Small size & not Large. My fault. But, it still fit ok, a little snug, yet it made me feel warm when I went outside. I will be ordering a large size in the near future. Some one else in the family will get the small size item.
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Reviewed in the United States on February 11, 2026
★★★★★ 5
Warm
Size: XX-Large, Color: Black
13. Degrees at work this morning and with these as a base layer I was perfectly warm and comfortable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 8, 2026
★★★★★ 5
I think I could have been OK with a medium instead of a large, but still warm and comfy !!
Size: Large, Color: Dark Grey
Very Comfortable, and warm!! Cold weather in PA this winter !!!!
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Reviewed in the United States on February 11, 2026
★★★★★ 5
Worthy value.
Size: Large, Color: Dark Grey
Good underwear has a price.
This is definitely worth the investment. Not a heavy warm, but definitely a good cold day layer. Wore them in the house as sleeper.
They fit like spandex with a fly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 12, 2026
