THE UNIQUE DUAL STAGE SYSTEM The unique dual-stage system pioneered by Boyesen is one of the 2-stroke performance tricks used by the best tuners in motocross. Boyesen Reeds offer quicker throttle response, wider power band, smoother power delivery from low to high rpm, without flat spots or sudden bursts. Gives improved power throughout. No modification needed to install. Dirt Bike Magazine says: “The best power increase you can get on a pound-for-pound basis...period.”
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