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SKU: 40665 | UPC: 808422406659
Borla ProXS Muffler 2.5in Offset Inlet/2.5in Center Outlet 4x9.5in Oval 19in Body 40665
The Borla 40665 ProXS Muffler delivers the signature Borla Sound of Power for custom exhaust setups on cars, trucks, and performance vehicles. This universal 2.5-inch muffler with offset inlet and center outlet boosts horsepower, torque, and fuel efficiency while extending engine life. Its compact oval design fits tight spaces in turbocharged and high-performance applications.
Key Features
- Reversible Design: Allows flexible inlet/outlet positioning for easy adaptation to any 2.5-inch exhaust layout.
- T-304 Austenitic Stainless Steel: Provides corrosion resistance and durability that withstands extreme heat and road conditions.
- 100% Welded Construction: Ensures structural integrity and leak-free performance under high pressure.
- Free-Flow Technology: Reduces backpressure for measurable gains in power and throttle response.
- CFF Acoustic Core: Controls drone and delivers deep, aggressive exhaust tone without excess noise.
Product Notes
- 4" height x 9.5" width x 19" body length; 24" overall length for versatile mounting.
- Natural mill finish ready for brushing or polishing to match vehicle aesthetics.
- Ships in protective packaging; handling requires care to avoid dents.
Installation Notes
- Professional installation recommended.
- Slip-fit pipe connections; use high-temp clamps or welding for secure attachment.
- Compatible with 2.5-inch mandrel-bent tubing; reversible for straight or angled routing.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Universal | Universal | Custom Exhaust | Turbo/Performance Builds |
Why Choose Borla?
- Pioneered stainless steel performance exhaust for classics like Ferrari and Rolls-Royce.
- Leads in design for street, off-road, and racing with proven power gains.
- Engineered for precise fit and million-mile durability in demanding conditions.
Frequently Asked Questions
-
Q: Does this muffler fit specific vehicles?
A: Universal design suits most 2.5-inch systems on cars, trucks, SUVs, and turbo setups; confirm measurements for your application. -
Q: What material is used and does it rust?
A: T-304 stainless steel construction resists rust and maintains shine with minimal care. -
Q: What warranty covers this muffler?
A: Backed by Borla's limited lifetime warranty against defects in materials and workmanship.
Shipping & Handling
- Method: UPS Ground or FedEx
- Availability: In stock - ships same or next business day
- Packaging: Box dimensions 26" L x 10" W x 10" H
- Weight: 11 lbs
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