Description
The Borla XR-1 Multi-Core Racing Muffler (Part Number 401384) is engineered for high-performance vehicles requiring a compact and efficient exhaust solution. With a 2.5-inch inlet and outlet, this muffler features a 4-inch round body measuring 17 inches overall length, making it suitable for both classic and late-model cars with ground clearance concerns. Its unique design integrates Borla’s patented Multicore technology, which effectively attenuates sound while maintaining optimal horsepower and torque output. The high-temperature continuous-filament fiber (CFF) acoustic material inside ensures durability and noise reduction without sacrificing performance. Constructed entirely with T-304 stainless steel, this muffler offers unmatched durability and an attractive mirror-like finish that can be polished for aesthetic enhancement. Its reversible design adds versatility, making installation adaptable to various exhaust configurations. Built in the USA, Borla’s reputation for quality and innovation guarantees a reliable component that meets the demands of racing and high-performance applications. Whether upgrading a muscle car or optimizing a sports vehicle, this muffler provides a perfect balance of sound control, durability, and performance that meets the needs of enthusiasts seeking a professional-grade exhaust component.
Features:
- Compact design suitable for vehicles with ground clearance issues
- Multicore technology for sound attenuation without performance loss
- High-temperature continuous-filament fiber (CFF) acoustic material for durability
- 100% welded construction for strength and longevity
- Made from durable T-304 stainless steel with a polished finish
- Reversible design for installation flexibility
- Universal fit with 2.5-inch center inlet and outlet
- Built in the USA for quality assurance













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