SKU: 400490 | UPC: 808422004909
Borla 400490 ProXS Muffler 2.5″ Offset Inlet/Outlet 4×9.5″ Oval 14″ Body Notched Necks
Borla ProXS 400490 is a universal performance muffler designed for custom exhaust systems on cars, trucks and SUVs with 2.5″ piping. This offset/offset oval muffler delivers the signature Borla Sound of Power, increased horsepower and torque, better fuel efficiency and aggressive exhaust note. Install it to transform throttle response and enjoy refined motorsport styling.
Key Features
- Notched Necks: Enable direct clamp-on connection without cutting or welding for straightforward setup.
- Reversible Design: Allows inlet/outlet positioning from either side to match any exhaust layout.
- T-304 Stainless Steel: Corrosion-resistant material ensures lifelong durability in harsh conditions.
- 100% Welded Construction: Provides structural integrity to handle high-performance demands.
- Free-Flow with CFF Acoustic Core: Boosts exhaust flow for power gains while controlling drone and refining tone.
Product Notes
- Universal fit requires custom fabrication or adaptation to existing 2.5″ exhaust.
- Mill finish can be polished for custom appearance.
- Ships in protective packaging; 7.3 lbs product weight.
Installation Notes
- Professional installation recommended.
- Uses standard exhaust clamps on notched 2.5″ necks; no special tools needed.
- Compatible with most aftermarket hangers and piping; measure clearance for 4″ height.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Universal | All | All | 2.5″ Exhaust Systems |
Why Choose Borla?
- Leaders in stainless steel exhaust since 1979 with racing wins worldwide.
- Builds systems for power, torque and sound in street and off-road use.
- Engineered in USA with Million-Mile warranty for total confidence.
Frequently Asked Questions
- Q: Does this muffler fit specific vehicles?
A: Universal design works with any custom or stock 2.5″ offset exhaust on cars, trucks or SUVs; adapt as needed for your setup. - Q: What material and finish does it have?
A: High-grade T-304 austenitic stainless steel with natural mill finish, ready for brushing or polishing. - Q: What warranty covers this part?
A: Backed by Borla’s Million-Mile warranty against defects when installed properly.
Shipping & Handling
- Method: UPS Ground or FedEx
- Availability: In stock – ships same or next business day
- Packaging: Securely boxed, approx. 20″ x 10″ x 6″ dimensions
- Weight: 7.3 lbs
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