SKU: 40670 | UPC: 808422406703
Borla 40670 ProXS Muffler - 3in Center Inlet Dual 2.25in Outlets 4x9.5in Oval 19in Body Universal
The Borla 40670 ProXS Muffler delivers aggressive exhaust tone with power gains for trucks cars SUVs in custom systems. This universal oval muffler fits 3in piping via center inlet and dual 2.25in rear outlets or reverses for dual inlet single outlet setups. Gain torque fuel economy and Borla Sound of Power in any performance exhaust.
Key Features
- T-304 Stainless Steel: Resists rust corrosion lasts lifetime in harsh conditions.
- Reversible Design: Installs single inlet dual outlet or dual inlet single outlet for system flexibility.
- Free Flow Technology: Increases horsepower torque reduces backpressure improves efficiency.
- CFF Acoustic Core: Controls drone delivers deep powerful rumble without excess noise.
- All Welded Construction: Ensures structural integrity vibration resistance for track street use.
Product Notes
- Body dimensions 4in H x 9.5in W x 19in L overall length 24in for compact center positioning.
- Natural mill finish brushes polishes easily for custom looks.
- Made in USA with Million Mile warranty covers defects unlimited mileage.
Installation Notes
- Professional installation recommended.
- Clamp or weld to 3in inlet 2.25in outlets matches pipe diameter precisely.
- Position center mount reversible ends simplify routing in tight chassis.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Universal | All | Custom Exhaust | Trucks SUVs Cars |
| 1980-2024 | Ford | F-150 F-250 | All w/3in Piping |
| 1980-2024 | Chevrolet | Silverado 1500 2500 | All w/3in Piping |
| 1980-2024 | Dodge | Ram 1500 2500 | All w/3in Piping |
| 1980-2024 | Toyota | Tundra Tacoma | All w/3in Piping |
Why Choose Borla?
- Leads stainless steel exhaust design manufacturing two decades.
- Delivers power torque gains distinctive racing sound every throttle.
- Engineered precision 100% US built Million Mile warranty.
Frequently Asked Questions
-
Q: Does this fit my truck exhaust?
A: Universal design works any vehicle 3in single pipe to dual 2.25in or reverse reversible ends adapt most systems. -
Q: What material construction?
A: T-304 austenitic stainless steel 100% welded high temp CFF core never rusts built strong. -
Q: What warranty coverage?
A: Million Mile warranty defects materials workmanship unlimited miles Borla quality assurance.
Shipping & Handling
- Method: UPS Ground Free Shipping Orders $99+
- Availability: In stock - ships same or next business day
- Packaging: Secure Borla box 26in x 10in x 10in
- Weight: 10.2 lbs

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