Seller notes

20421N Straight Through Universal Notched Ends Exhaust Muffler - 4 Inch ID, TOTALFLOW 4" inch diesel high performance straight through performance Diesel Notched Ends exhaust mufflers constructed with 409 stainless steel, our universal exhaust mufflers designed to allow for maximum free flow—and horsepower. Whether you have a true dual exhaust system or not, our mufflers will make you master the flow & the sound of your exhaust system giving you the max dyno results. Our universal muffler repl...

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