Borla XR-1 Multi-core Oval Racing Muffler (400115) delivers race-level flow, sound control, and durability for high-output vehicle applications.
Engineered for peak performance, the Borla XR-1 Multi-core Muffler is trusted by leading drag and oval track racers. It features Borla's patented uninterrupted-flow multicore technology, allowing it to outperform straight pipes in repeated tests. The elongated oval body measures 34 inches long, with 3-inch inlet and outlet diameters, designed to optimize exhaust flow and minimize backpressure for maximum horsepower gains. Made from high-grade austenitic stainless steel, this muffler is track-proven for strength and long-term corrosion resistance. Stainless steel packing ensures consistent acoustic performance without burnout, while its reversible design offers installation flexibility.
Key Features :
3-inch ID inlet and outlet for high-flow exhaust systems
34-inch long oval body enhances flow and supports high-horsepower builds
Patented multicore design maximizes power output and efficiency
Constructed from durable austenitic stainless steel for corrosion resistance
Stainless steel sound-absorbing packing prevents burnout over time
Reversible configuration allows versatile installation options
Meets strict noise requirements while maintaining aggressive tone
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