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Power X-Wing for carburetor equipped models, Fits all Evolution Sportster, Evolution Big Twin, Twin Cam and Buell's with the stock Keihin CV carburetor
The Boyesen Power X-Wing is the simplest an most economic way to maximize the power and efficiency of your intake. See the benefits of releasing the pure and simple potential trapped in your bikes engine. The Power X-Wing provides acceleration gains from idle to wide-open throttle, smoother and broader power, more horsepower, more torque and improved gas mileage.