SKU: 40358 | UPC: 808422403580
Borla ProXS Muffler 2.5in Offset Inlet/2.5in Center Outlet 4×9.5 Oval 14in Body Universal
The Borla 40358 ProXS Muffler serves as a universal performance upgrade for custom exhaust systems across various vehicles. This reversible oval muffler with 2.5-inch offset inlet and center outlet delivers the Borla Sound of Power, increased horsepower and torque, better fuel economy, and extended engine life. Install it to experience throttle response, power gains, and an aggressive exhaust note on street, off-road, or racing setups.
Key Features
- T-304 Stainless Steel: High-grade austenitic material resists corrosion for lifelong durability in harsh conditions.
- 100% Welded Construction: Full welds ensure structural integrity and leak-free performance under high pressure.
- Reversible Design: Flip for inlet/outlet flexibility, simplifying custom fabrication and fitment.
- Free Flow Technology: Optimized internal design reduces backpressure for measurable gains in power and efficiency.
- CFF Acoustic Core: High-temperature continuous-filament fiber controls tone and volume for deep, resonant sound without drone.
Product Notes
- Natural mill finish allows brushing or polishing before install for custom aesthetics.
- Body dimensions: 4in height x 14in length x 9.5in width; overall length 19in.
- Un-notched neck (part 40358) for precise custom cutting and welding.
Installation Notes
- Professional installation recommended.
- Clamp or weld 2.5in piping to offset inlet and center outlet; verify flow direction.
- Compatible with standard exhaust hangers and hardware for most universal applications.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Universal | All | Custom Exhaust | All |
Why Choose Borla?
- Leaders in stainless steel exhaust since 1978, starting with classics like Ferrari and Rolls-Royce.
- Engineered for power, torque, economy, and motorsport styling on street, off-road, racing vehicles.
- Creates the rush of throttle response and heart-pounding soundtrack enthusiasts demand.
Frequently Asked Questions
- Q: Does the 40358 fit specific vehicles?
A: This is a universal muffler for custom 2.5in exhaust builds on cars, trucks, and SUVs; measure your piping for compatibility. - Q: What material and finish does it have?
A: Made from rustproof T-304 stainless steel with a natural mill finish that polishes to a mirror shine. - Q: What warranty applies?
A: Backed by Borla’s Million Mile Warranty against defects in materials and workmanship.
Shipping & Handling
- Method: UPS Ground
- Availability: In stock – ships same or next business day
- Packaging: Durable cardboard box, 20in x 10in x 6in
- Weight: 7 lbs
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