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These exhaust systesm feature completely waterjacketed chamber/head pipe assemblies and utilize the legendary RIVA designed 'flatdraft' manifold that has become the standard of the industry. Chambers are easily removed for quick access to head & cylinder.
DRY PIPE: Makes 27 Horsepower on a stock engine over the stock exhaust system when used in conjunction with carb jetting and an ignition advance plate. Runs dry inside, optomizing exhaust flow and sonic reflection.
WET PIPE: Increases low end thrust and mid range on stock and modified craft. Water is introduced into chamber for additional performance.
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