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Whether it's drag racing or circle track racing, Borla has an XR-1 racing muffler for you. In fact, the 16 in. Shootout mufflers are rated the highest flowing mufflers on the market. XR-1's feature a straight through design for maximum flow, aircraft quality T304 stainless steel construction for reduced weight, all-welded, one-piece design for increased structural integrity, and stainless steel sound absorbing material to protect against burnout.
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