V-Force 4 Reed Valve


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The unique design of the V-Force reed valve system features double the reed tip surface over a conventional reed valve design. This has two major benefits: 1) The reed petals only travel half the distance as a conventional reed valve design to get the same airflow. 2) Because the reed petals only need to travel half the distance of that on a conventional reed valve design, there is a greater chance of them being fully opened as well as a better chance of sealing when they are "closed". A reed petal never truly "closes" in a classic sense, as it is always in movement. Consider this, an engine operating at 8,000 RPM results in a reed petal opening and closing 133 times in one second. This fact, sheds light on another V-Force advantage. Since the petals are only traveling half the distance, they generally last longer are they receive less wear than the reed petals on a conventional reed valve design.

  • Reed petal 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 aerodynamic shape.

  • Includes OEM KTM intake boot required for these machines.

    • What shipping options are available?

    Online orders will be shipped through FedEx, USPS, OnTrac, or other reputable shipping services based on what we determine to be the best option. We (do not) ship to P.O. boxes. Please contact us if you are interested in an expedited shipping on your order.

    Do you ship outside of the USA?

    No, unfortunately at this time we only ship to the lower 48 states in the USA.Do you ship to Alaska and Hawaii?

    We (do not) ship to Alaska and Hawaii.

    What could cause a shipping delay?

    Shipping delay can occur when the wrong address or zip code is submitted for the shipping address. If the shipping company can not deliver the package we will contact you via phone or email.

    During the holiday season shipping delivery may vary.

    How do I return an item?

    Please fill our our RMA form. If you have an account, go to the order to fill out the form. If you don't it is under policies. Items can be returned within 45 days after purchase. Items must be in new/unused condition with all of the original packaging. Customers who make a mistake with their order are responsible for return shipping costs. Discounted return labels can be purchased. If we have made a mistake, please email with pictures of what you received including the part number and the year, make and model of your machine if applicableIs there a cost on returns?

    If an item needs to be returned the shipping fees are the customer's responsibility.

    Amount of refund will be based on the purchase price of your product.

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