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SKU: 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 integration into any setup.
Key Features
- Notched Necks: Allow direct clamp-on fit without welding or fabrication for quick installs.
- Reversible Design: Offset inlet and center outlet can be flipped for maximum routing flexibility in tight spaces.
- T-304 Stainless Steel: Premium austenitic material resists corrosion and withstands extreme heat for lifelong performance.
- 100% Welded Construction: Mandrel-bent tubes and full welds deliver unrestricted flow and unbreakable strength.
- Free-Flow Acoustics: High-temp continuous-filament fiber core tunes deep exhaust tone while enhancing throttle response.
Product Notes
- Natural mill finish ready for brushing or polishing to match your build.
- 19-inch overall length fits compact and extended exhaust paths.
- Ships in protective Borla packaging to prevent damage.
Installation Notes
- Professional installation recommended.
- Clamp-on design uses standard 2.25in exhaust clamps; no fabrication needed.
- Position reversible ends to align offset inlet/center outlet with piping.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Universal | Universal | Universal/Custom | 2.25in Exhaust Systems |
Why Choose Borla?
- Leaders in stainless steel exhaust since pioneering systems for Ferrari and Rolls-Royce.
- Delivers measurable power, torque and fuel savings plus motorsport sound.
- Engineered in the USA with Million-Mile warranty for total confidence.
Frequently Asked Questions
-
Q: Will this muffler fit my vehicle's exhaust?
A: Yes, universal design works with any 2.25in custom or aftermarket exhaust on cars, trucks or SUVs; measure piping to confirm. -
Q: What material and finish does it have?
A: T-304 stainless steel with natural mill finish; brush or polish surfaces before install for custom look. -
Q: What warranty coverage is provided?
A: Full Million-Mile warranty covers defects in materials and workmanship when installed properly.
Shipping & Handling
- Method: UPS Ground
- Availability: In stock - ships same or next business day
- Packaging: Borla box approx. 20in x 10in x 6in
- Weight: 7 lbs
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