if you do rocks then this is ridiculous. the first time you come down on a rock your exhaust tip will be flat
triple, 2.5" would be a good tubing size. if you even want to upgrade it. stock tubing is fine also. i think flowmaster sounds a lot better. magnaflow sounds like a car and you can't even hear it. sounds like a sport exhaust like whats on a luxury car like an infinity. just listen to the magnaflow clip on magnaflows website.
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