Borla XR-1 Raceline Slim Line Multi-Core Muffler 3.5" Oval Tubing (40536)
Maximize ground clearance and unleash uncompromised track performance with the Borla XR-1 Raceline Slim Line Multi-Core Muffler. Specifically engineered for extreme, high-horsepower racing applications and low-profile vehicles where chassis space is limited, this ultra-slim oval muffler measures just 3 inches high. It features Borla's patented multi-core two-tube internal design, which is fluid-dynamically proven to flow even better than a standard length of straight exhaust tubing. By completely eliminating restrictive backpressure, it drastically improves exhaust gas velocity to maximize horsepower and torque delivery, making it an exceptional choice for everything from high-RPM domestic race engines to punishing rotary engine configurations.
Built to endure the intense heat and harsh environments of competitive motorsport, this heavy-duty race muffler features a 100% welded chassis manufactured from premium T-304 stainless steel for lifetime protection against corrosion. Its straight-line center inlet and center outlet necks feature 3.5-inch tubing formed into a specialized 4.13" x 2.61" oval profile to seamlessly blend into custom low-clearance systems. Sound attenuation is managed by premium, high-temperature T-304 stainless steel wool packing, which controls high-frequency harshness while preserving an aggressive, wide-open racing roar. Delivering ultimate installation flexibility with a fully reversible design and a clean, unembossed smooth shell, this American-made racing component comes ready for custom weld-in fabrication.
Features
- Patented multi-core two-tube racing layout flows better than standard straight tubing
- Ultra low-profile 3" body height delivers superior ground clearance for slammed race cars
- Manufactured from 100% welded, premium T-304 stainless steel for lifetime durability
- Features 3.5" round tubing formed into high-flow 4.13" x 2.61" oval necks
- Packed with heavy-duty T-304 stainless steel wool to survive extreme racing exhaust temperatures
- Clean, unembossed natural mill finish can be easily brushed or polished prior to welding
- Fully reversible, universal design proudly manufactured in the USA
Fitment
- Universal Fitment
- High-Horsepower Race, Street/Strip, and Custom Low-Profile Vehicles
- Universal 3.5" Oval Weld-In Track Applications
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