SKU: 40946 | UPC: 808422409469
Borla XR-1 Sportsman Racing Muffler 3.5in Center Inlet/3.5in Center Outlet 4.5x7.88in Oval x 16in Body 40946
The Borla 40946 XR-1 Sportsman muffler delivers racing-level performance with a compact oval design: 4.5in width x 7.88in height x 16in body length, 21in overall length, and 3.5in center inlet/center outlet. This universal reversible muffler suits custom exhaust builds on performance cars, trucks, off-road vehicles, and race applications. Gain power, torque, better fuel economy, and the signature Borla exhaust note that excites with every throttle pull.
Key Features
- Reversible Design: Mount inlet/outlet from either end for easy adaptation to any exhaust layout.
- T-304 Stainless Steel: Corrosion-resistant material ensures durability in harsh racing and off-road conditions.
- 100% Welded Construction: Provides structural integrity to handle high heat and pressure without leaks.
- Free-Flow Internal Design: Reduces backpressure for measurable horsepower and torque increases.
- CFF Acoustic Core: High-temperature fiber controls sound levels while maintaining aggressive racing tone.
Product Notes
- Compact oval shape fits tight spaces under vehicles with limited clearance.
- Mill finish allows brushing or polishing for custom appearance.
- Ships ready for pipe connection; includes no tips.
Installation Notes
- Professional installation recommended.
- Reversible orientation simplifies routing in custom setups.
- Compatible with standard 3.5in exhaust piping; clamps or welding required.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Universal | Universal | Performance/Racing Vehicles | Custom Exhaust Builds |
Why Choose Borla?
- Leaders in stainless steel exhaust since pioneering systems for classics like Ferrari and Rolls-Royce.
- Engineered for power gains, torque, fuel efficiency, and engine protection across street, off-road, and track.
- Delivers the thrill of raw power and heart-pounding exhaust sound in every application.
Frequently Asked Questions
-
Q: Does this muffler fit specific vehicles?
A: Yes, universal design with reversible ends works for custom installs on cars, trucks, SUVs, and race cars using 3.5in piping. -
Q: What material is used and does it rust?
A: Made from T-304 austenitic stainless steel for rust resistance and lifelong performance in extreme conditions. -
Q: What warranty covers this muffler?
A: Borla provides a 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: Protective cardboard box, 22in L x 10in W x 10in H
- Weight: 11 lbs (shipping weight 12 lbs)

Borla
Discover the Borla Exhaust collection, where world-class exhaust products meet the high standards of automotive enthusiasts. Borla is dedicated to exceeding your expectations by utilizing a state-of-the-art test and development center. This facility allows us to continually refine our manufacturing precision and maintain the highest quality standards. Our commitment to innovation is evident through numerous US patents for advanced exhaust design and multiple "Best New Product" awards in the industry. Unmatched Customization What sets Borla apart from other exhaust systems is our vehicle-specific design approach. Each exhaust system is meticulously crafted to accommodate the unique mechanical and acoustical properties of different cars and trucks. We invest countless hours in optimizing various components, such as: Muffler body shapes Internal core configurations Flow dynamics Sound characteristics Exclusive Sound Technologies Borla offers a choice of three exclusive sound techno... View Our Borla Products...
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