Borla XR-1 Sportsman Racing Muffler, 4-Inch Center Inlet and Outlet, Oval, Part BOR40947

High quality austenitic stainless steel. Patented, race-winning XR-1 Raceline technology. 3 options: Offset - Made with the same patented, flow through design as the XR-1 Sportsman oval. The inlet/outlet are offset to the same side of the muffler, to accommodate transmission and frame rail interference on some applications Oval -- BORLAs #1 selling racing muffler. Satisfies the needs of most racing applications because it is the lightest, most compact, and highest flowing racing muffler in its class and at a competitive price. Record-holder Hurley Blakeney has run BORLAs on his AA/AT Ford T-Bird because he loves the quieter driver compartment without giving up any power.Round - Made with the same patented, flow through design as the XR-1 Sportsman Oval. This Muffler is 5 inches in diameter and 15 inches long. Designed for door car/ roadster applications that require a compact round muffler. XR-1 Sportsman Racing Muffler - 4" Center Inlet/ 4" Center Outlet 4.25" x 7.88" Oval x 12" Long Body 17" Overall Length. Universal Part. Reversible Design. Million Mile Warranty

• 4" Center Inlet/ 4" Center Outlet 4.25" x 7.88" Oval x 12" Long Body 17" Overall Length
• Compact size is perfect for applications with limited space
• Un-Notched necks are designed for weld in installation
• Universal muffler. Reversible design.

The Borla XR-1 Sportsman Racing Muffler delivers high-flow exhaust performance in a compact, weld-in design. Built from premium austenitic stainless steel, this universal muffler uses Borla’s patented, race-winning XR-1 Raceline flow-through technology to reduce exhaust restriction while maintaining a quieter driver compartment. The oval configuration is well suited to many racing applications where available space, weight, and exhaust flow are important considerations.

Part BOR40947 features a 4-inch center inlet and 4-inch center outlet with a reversible design for installation flexibility. Its compact body is useful in applications with limited clearance, while the un-notched necks are designed for weld-in installation. As part of the XR-1 Sportsman line, this Borla muffler is engineered for demanding competition use and is backed by Borla’s Million Mile Warranty. It is a universal automotive part and may require custom exhaust fabrication for proper fitment.

Key Product Specifications & Technical Data

• Brand: Borla
• Part Number: BOR40947
• Series: XR-1 Sportsman Racing Muffler
• Configuration: Oval muffler
• Inlet Size: 4 inches
• Outlet Size: 4 inches
• Inlet and Outlet Position: Center/center
• Construction: Austenitic stainless steel with flow-through internal design

What's Included in the Box

• One Borla XR-1 Sportsman racing muffler

Fitment: Universal automotive application. Custom welding and exhaust-system modification may be required. Verify inlet, outlet, clearance, and installation requirements before purchase. This product is intended for racing and off-road use where permitted and is not identified as emissions-certified for street use.

Features:

• High-Flow Performance: Borla’s patented XR-1 Raceline flow-through technology is designed to support strong exhaust flow for racing applications.
• Durable Stainless Steel Construction: Premium austenitic stainless steel provides corrosion resistance and durability in demanding exhaust environments.
• Compact Oval Design: The space-conscious oval body is suitable for installations with limited room around the transmission, frame rails, or other components.
• Reversible Weld-In Installation: Center inlet and outlet placement, un-notched necks, and a reversible design provide flexibility during custom exhaust fabrication.

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1