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I've got 2.5"s on there now and the valance openings are 4.5" vertically. 3"s are the smallest tips available on the Brullen and would leave 3/4" clearance above and below (assuming the tips are centered in the openings). I don't think I want to go much bigger for fear of it hitting the valance. Does 3/4" sound like enough? Also, what's the deal with hollow vs. resonated tips? I assuming the resonated tips are the "nested" pipe style. Does exhaust actually flow through that outer annulus? Pros/cons for flow/noise?
 "The more "F" and the less "m" you have, the more "a" you can get." -- Brian Beckman, The Physics of Racing |
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