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Moto Tassinari V-Force 3 Reed Valve System for Polaris - V3130-794A-3 2017 Polaris Ranger 570-4 Mid-Size Crew 2010 Polaris Sportsman 550 TouringMoto Tassinari V Force 3 Reed Valve System Part Number: V3130 794A 3 Double the reed tip surface over a conventional reed valve design Increased bottom end, stronger mid range and longer top end Greater efficiency due to reduced reed petal travel More airflow means more horsepower Reduced reed petal wear Screw free design eliminates risk of screws going through motor Screw free design enables super quick reed petal changes The VForce reed valve system