VForce4 Reed Valve System Fits KTM, Fits Husqvarna, Fits Gas GasPetal resin system, carbon fiber and lay up Pre curved reed petal ensures better seal at tip Wider reed cage for maximum airflow Combined reed tip area increased by 10. 5% resulting in increased total air flow Airfoil shape added to cage tip to increase air velocity from outer ports Long reed stops added to progressively slow petal tip velocity, for increased petal durability Reduced frontal area of central wing by 15. 6% combined with a more