SKU: 400481 | UPC: 808422004817
Borla 400481 ProXS Muffler - Universal 2.5in Center Inlet/Offset Outlet Oval 4.25 x 7.88 x 14in
The Borla 400481 ProXS Muffler is a universal performance exhaust component designed for custom builds on cars, trucks, and SUVs. Its compact oval shape fits applications with limited space while delivering the signature Borla Sound of Power, increased horsepower, torque, and fuel efficiency. Reversible design and notched necks enable straightforward clamp-on installation for any exhaust setup.
Key Features
- Reversible Design: Install as center inlet/offset outlet or reverse for maximum flexibility in custom exhaust routing.
- T-304 Austenitic Stainless Steel: Provides lasting corrosion resistance with 100% welded construction for structural integrity.
- Notched Necks: Simplify clamp-on attachment without welding, compatible with 2.5in piping.
- Compact Oval Body: 4.25in height x 7.875in width x 14in length fits tight engine bays; 18in overall length.
- Free-Flow Technology: Paired with high-temperature CFF acoustic material for enhanced flow, reduced backpressure, and refined sound control.
Product Notes
- Natural mill finish allows brushing or polishing before installation for custom appearance.
- High-flow design supports longer engine life through reduced exhaust temperatures.
- Ships in protective packaging to prevent damage; weight 7 lbs.
Installation Notes
- Professional installation recommended.
- Clamp-on fit using notched 2.5in inlet (center position) and 2.25-2.5in offset outlet necks.
- Reversible orientation; no cutting or welding required for universal applications.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Universal | All | Custom Exhaust | All |
Why Choose Borla?
- Leaders in stainless steel performance exhaust since pioneering systems for classics like Rolls-Royce and Ferrari.
- Engineered for real-world power gains, torque increases, and improved fuel economy.
- Builds complete driving excitement with throttle response and motorsport-inspired sound.
Frequently Asked Questions
-
Q: Is this muffler vehicle-specific?
A: No, the 400481 is a universal part ideal for custom exhaust systems on cars, trucks, SUVs, and performance builds with space constraints. -
Q: What material is used and does it rust?
A: Constructed from T-304 stainless steel for superior rust resistance and durability in all conditions. -
Q: What warranty applies and is installation easy?
A: Backed by Borla's limited lifetime warranty; notched necks enable easy clamp-on setup, though professional install advised for best results.
Shipping & Handling
- Method: UPS Ground or FedEx Ground
- Availability: In stock - ships same or next business day
- Packaging: Secure box approx. 20in x 9in x 6in
- Weight: 7 lbs (shipping weight 8 lbs)
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