XR1 COL/MUF SHTY 2-3/8IN 4-1/2 XR1 COL/MUF SHTY 2-3/8IN 4-1/2 Borla Reversible design for installation flexibility. This is THE HOT set up in drag racing. This patented, award and race-winning product was designed to replace your current open header collector and serves as a power producing merge collector and muffler -- all in a single unit. Recommended for Dragsters, Altered, Roadsters, Full Chassied Cars, accepted in NHRA, IHRA, Hot Rod Series, Brackets, Super Chevy, NSCA. Can also be used on other vehicles. Patented Multicore design for maximum power. Recommend for high horsepower applications. T-304 Stainless steel will never rust. 100% welded construction for strength. Free Flow desgin for improved performance.

XR1 COL/MUF SHTY 2-3/8IN 4-1/2

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$ 747.99 $ 667.99
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Reversible design for installation flexibility. This is THE HOT set up in drag racing. This patented, award and race-winning product was designed to replace your current open header collector and serves as a power producing merge collector and muffler -- all in a single unit. Recommended for Dragsters, Altered, Roadsters, Full Chassied Cars, accepted in NHRA, IHRA, Hot Rod Series, Brackets, Super Chevy, NSCA. Can also be used on other vehicles. Patented Multicore design for maximum power. Recommend for high horsepower applications. T-304 Stainless steel will never rust. 100% welded construction for strength. Free Flow desgin for improved performance.

Reversible design for installation flexibility. This is THE HOT set up in drag racing. This patented, award and race-winning product was designed to replace your current open header collector and serves as a power producing merge collector and muffler -- all in a single unit. Recommended for Dragsters, Altered, Roadsters, Full Chassied Cars, accepted in NHRA, IHRA, Hot Rod Series, Brackets, Super Chevy, NSCA. Can also be used on other vehicles. Patented Multicore design for maximum power. Recommend for high horsepower applications. T-304 Stainless steel will never rust. 100% welded construction for strength. Free Flow desgin for improved performance.

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Our policy lasts 30 days. If 30 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange. To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging. Gift cards are not eligible for return.

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