SKU: 40657 | UPC: 808422406574
Borla 40657 ProXS Muffler – Universal 2″ Offset Inlet/2″ Center Outlet 4.25×7.88 Oval 14″ Body
The Borla 40657 ProXS Muffler is a universal performance part with 2-inch inlet and outlet for custom exhaust systems on cars, trucks and SUVs. Its compact oval shape afters easy fitment in tight spaces while providing the Borla Sound of Power, increased horsepower, torque, fuel efficiency and engine longevity. Reversible design supports flexible inlet/outlet configurations for any 2-inch piping setup.
Key Features
- Compact Oval Body: 4.25 in. height x 7.88 in. width x 14 in. length (19 in. overall) fits restricted areas without sacrificing flow.
- Reversible Design: 2 in. offset inlet/2 in. center outlet flips for straight or angled configurations in custom installs.
- T-304 Stainless Steel: Premium austenitic material resists rust and corrosion for lifelong durability.
- 100% Welded Construction: Ensures structural integrity under high heat and pressure.
- Free Flow with CFF Acoustic Core: Boosts exhaust scavenging for power gains and controls tone with high-temp fiber packing.
Product Notes
- Universal application for street, off-road and racing vehicles with 2 in. piping.
- Natural mill finish ready for brushing or polishing before install.
- Single muffler unit, aftermarket pipe connect only.
Installation Notes
- Professional installation recommended.
- Clamp or weld to existing 2 in. exhaust pipes; reversible ends simplify routing.
- Compatible with standard band clamps and hangers; no special hardware needed.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Universal | All | All Models | Custom Exhaust Applications |
Why Choose Borla?
- Leaders in stainless steel exhaust since pioneering systems for Ferrari and Rolls-Royce.
- Delivers measurable power, torque and efficiency gains with signature sound.
- Engineered for street, off-road and racing with precision mandrel-bent technology.
Frequently Asked Questions
- Q: Does the Borla 40657 fit specific vehicles?
A: This is a universal muffler for custom installs on most cars, trucks and SUVs using 2 in. inlet/outlet piping; check clearance for your setup. - Q: What material and finish does it have?
A: Made from T-304 austenitic stainless steel with natural mill finish; polish or brush for custom look. - Q: What warranty covers this muffler?
A: Backed by Borla’s million-mile limited warranty on materials and workmanship.
Shipping & Handling
- Method: UPS Ground or FedEx Ground
- Availability: In stock – ships same or next business day
- Packaging: Protective cardboard box, 20 in. L x 9 in. W x 9 in. H
- Weight: 8.2 lbs
Reviews
There are no reviews yet.