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The Borla XR-1 multi-core racing muffler is a lightweight, track-oriented muffler built from high-quality T-304 stainless steel with a reversible inlet/outlet design for installation flexibility. Its patented multicore, uninterrupted-flow construction is engineered for racing applications, offering high-temperature stainless steel wool packing for sound control and fully welded construction for durability. XR-1 Raceline products are recommended where weight savings and flow are priorities.
Borla 1.23 x 8.5 x 5.5 x 4 XR-1 Multi-Core Racing Muffler
