SKU: 40352 | UPC: 808422403528
Borla ProXS Muffler 2.5in Offset Inlet/ 2.5in Offset Outlet 4in x 9.5in Oval x 14in Long Body – Universal
Borla 40352 ProXS muffler delivers the signature Borla Sound of Power for custom exhaust builds on cars, trucks, and SUVs. This universal oval muffler fits 2.5-inch piping with offset inlet and outlet for straight-through flow, increasing horsepower, torque, and throttle response while cutting backpressure. Reversible design ensures easy adaptation to any layout, providing durable performance with motorsport styling.
Key Features
- T-304 Stainless Steel Construction: Corrosion-resistant material maintains structural integrity under extreme heat and road conditions for long-lasting exhaust performance.
- Reversible Offset Design: Allows inlet and outlet flexibility for center, side, or custom routing in tight spaces without fabrication.
- Free-Flow Internal Design: Reduces exhaust restriction to deliver measurable gains in power, torque, and fuel efficiency across RPM ranges.
- High-Temperature CFF Acoustic Core: Controls drone and resonance for a deep, aggressive tone without interior noise intrusion.
- 100% Welded Oval Body: 4″ height x 9.5″ width x 14″ length (19″ overall) provides strength and compact fit under most chassis.
Product Notes
- Universal fit for custom exhaust systems; measure clearance before install.
- Natural mill finish accepts brushing or polishing for custom appearance.
- Ships in protective packaging; inspect for shipping damage upon receipt.
Installation Notes
- Professional installation recommended.
- Clamp-on style; use 2.5-inch band clamps for secure slip-fit connection.
- Reversible orientation supports left- or right-side positioning; rotate as needed.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Universal | All | Custom Exhaust | 2.5″ Piping |
Why Choose Borla?
- Two decades pioneering stainless steel exhaust for street, off-road, and racing vehicles.
- Builds systems that add power, torque, and fuel economy while extending engine life.
- Engineered for the thrill of throttle response and heart-pounding exhaust note.
Frequently Asked Questions
- Q: Does this muffler fit specific vehicles?
A: Borla 40352 is universal for any custom exhaust with 2.5-inch offset piping; ideal for cars, trucks, SUVs requiring oval profile and compact length. - Q: What material is used and does it rust?
A: T-304 austenitic stainless steel prevents rust; fully welded for durability in all weather conditions. - Q: What warranty covers this muffler?
A: Borla offers a million-mile limited warranty on this T-304 stainless steel muffler against defects in materials and workmanship.
Shipping & Handling
- Method: UPS Ground or FedEx Ground
- Availability: In stock – ships same or next business day
- Packaging: Cardboard box, 21″ L x 11″ W x 6″ H
- Weight: 8 lbs (shipping weight 9 lbs)





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