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SKU: 40947 | UPC: 808422409476
Borla XR-1 Sportsman Racing Muffler 4in Center Inlet/4in Center Outlet 4.5in x 7.88in Oval x 12in Long Body Part #40947
The Borla 40947 XR-1 Sportsman muffler delivers aggressive racing sound and performance gains for custom exhaust builds on drag cars, race vehicles, and high-performance applications. This universal oval muffler with reversible 4-inch center inlet and outlet fits tight spaces in racing setups. Expect increased horsepower, torque, and throttle response with its free-flow design and distinctive Borla exhaust note.
Key Features
- Compact Oval Body: 4.5in width x 7.88in height x 12in length (17in overall) suits restricted engine bays for dragsters and race cars.
- Reversible Design: Allows inlet/outlet flexibility for straight-through or custom routing in performance exhaust systems.
- T-304 Stainless Steel: Corrosion-resistant material ensures durability under high-heat racing conditions.
- 100% Welded Construction: Provides structural integrity for high-RPM abuse and long-term reliability.
- Free-Flow with CFF Acoustic Core: Maximizes exhaust flow for power gains while controlling drone with high-temp fiber packing.
Product Notes
- Universal fit requires custom fabrication or pipe clamps for installation.
- Natural mill finish accepts brushing or polishing for custom appearance.
- Ships in protective packaging; weighs 7 lbs with 18in x 10in x 10in box dimensions.
Installation Notes
- Professional installation recommended.
- Uses 4in pipe slip-fit connections; weld or clamp to existing system.
- Reversible orientation supports center-to-center or offset routing.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Universal | All | Racing/Drag/Performance | Custom Exhaust Builds |
Why Choose Borla?
- Leaders in stainless steel exhaust since 1978 for street, off-road, and racing.
- Every part engineered for power, torque, and signature exhaust tone.
- Precision mandrel-bent designs reduce backpressure for real-world gains.
Frequently Asked Questions
-
Q: Does this muffler fit specific vehicles?
A: Designed as universal for racing and custom applications; pair with 4in piping on drag cars, imports, or domestics needing compact oval mufflers. -
Q: What material is used and does it rust?
A: T-304 austenitic stainless steel construction resists rust and withstands extreme temperatures in motorsport use. -
Q: What warranty applies and installation tips?
A: Backed by Borla's limited lifetime warranty on materials; professional welding or clamping advised for secure fit.
Shipping & Handling
- Method: UPS Ground or FedEx
- Availability: In stock - ships same or next business day
- Packaging: Secure box 18in L x 10in W x 10in H
- Weight: 7 lbs (shipping 8 lbs)
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