Increase horsepower and torque on 2 and 4 stroke bikes. On 2 strokes, the Power X-Wing improves power from idle to midrange with no loss on the top end. 4 strokes see power boosts from idle through over-rev. The Boyesen Power X-Wing simply out performs all other carburetor dividers on the market today. We recommend all motorcycle parts are fitted and tested by qualified professionals.
Fits: Yamaha YZ125 2005-2021