Pro X Steel Exhaust Valve/Spring Kit

Regular price$126.22

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The Pro X Steel Exhaust Valve Spring Kits are manufactured so close to OEM specs, you can reuse your stock retainers, bases, and seals without any modifications. It all begins with a 21-4N stainless steel valve that is black nitrided for an unprecedented combination of core strength and surface friction reduction. Then comes the chrome vanadium, heavy duty springs built specifically to handle the extra weight of the steel valves. Even at high rpms these springs hold a tight seal, so your valves won’t flutter or float even after seasons of you being heavy on the throttle. Everything comes together to create a valve kit that restores compression so your machine runs at peak performance.

  • Aftermarket steel valve and spring kit for your dirt bike or ATV

  • Kit comes with all valves and valve springs

  • Fully compatible with OEM retainers, bases, and seals

  • More durable than OEM

  • Less valve adjustments

  • Pro X tappet sets available

  • 21-4N stainless steel valves

  • Valves have black nitride coating
  • Heavy duty chrome vanadium valve springs
  • 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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