click to zoom in
  • Guaranteed Fitment

    Always the correct part

  • In-House Experts

    We know our products

  • Added Value

    High-Quality Brands

  • Fast Delivery

    Fast shipping on all orders

Dyno Box Stock LEGALITY TESTED BY DYNO Clone Valve Spring (10.8lbs @ .850" spring height) Hardened Green Stripe

No reviews yet Write a Review

Dyno Box Stock LEGALITY TESTED BY DYNO Clone Valve Spring (10.8lbs @ .850" spring height) Hardened Green Stripe

  • Introducing the Dyno Box Stock LEGALITY TESTED BY DYNO Clone Valve Spring in the Valve Train category.
  • This top-quality valve spring undergoes rigorous testing by Dyno experts to ensure compliance with all stock legality requirements.
  • With a spring weight of 10.8lbs and a spring height of .850, this valve spring offers superior performance and durability.
  • Crafted from hardened materials, this spring is built to withstand even the toughest conditions, providing long-lasting reliability.
  • Finished with a vibrant and recognizable Hardened Green Stripe, this valve spring is not only functional but also adds a touch of style to your engine.
  • Trust the Dyno Box Stock LEGALITY TESTED BY DYNO Clone Valve Spring for unbeatable performance in your valve train.
  • Dyno Trick Box Stock Clone Valve Spring (Factory Pre Checked For Legality) (10.8lbs @ .850 spring height). Provides additional spring pressure at max lift. These have been updated to heat treated for 2013 and also takes full advantage of the new clone valve spring rules.
  • New Improved Hardened
  • Marked with green stripe
Returns Policy

At Karting Supply, we understand that sometimes an item isn’t quite what you expected. That’s why we offer a 30-day return policy on all our products.

If you are not completely satisfied with your purchase, you can return the item(s) in its original condition within 30 days of your order for a full refund or exchange. Please Note: Customers are responsible for all return shipping costs and must include tracking information when returning items to us.

We do not accept returns or exchanges on opened software and video games unless they arrive damaged or defective. We also cannot accept any returned merchandise after 30 days from the date of purchase, nor can we take back any used goods (unless they were damaged or defective upon arrival).

If you need to return an item, please contact us at with your order number and the specific items you’d like to return. Our team will provide further instructions for returning the item(s) and processing your refund or exchange. Or you can start a return from your account dashboard.

Thank you for shopping with Karting Supply! We hope that our products meet your expectations and make it a pleasure to be on the track. If there is anything else we can do to help, don’t hesitate to reach out!


We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

We ship orders with UPS/FEDEX/USPS usually with SAME-DAY shipping.

Karting Supply delivers a range of benefits, including speedy shipping, up-to-the-minute pricing, account management, effortless re-ordering, hassle-free returns, and more – all designed to enhance your shopping experience.

Ordering: Save time with convenience of ordering online 24/7
Pricing: Get real-time pricing for products
Fast Shipping: Feel satisfied that your order will arrive quickly and reliably
Easy Returns: Enjoy the peace of mind of easy returns and reordering
  • How long does my order take to ship?
    Orders are processed right away and take 1 business for handling. Depending on the service for shipping and location you can expect your order to arrive in 1-5 business days.
  • Do you offer expedited shipping options?
    Yes, we can expedite shipments. Please contact us for the best expedited option.
  • Do you ship worldwide?
    Yes, we offer shipping worldwide.
  • Can I track my order?
    Once you complete your order you will be updated with the process of your order via email. Once a tracking number becomes available you will receive an email and be able to track it right from your email.
  • Can I return an item?
    Yes we accept returns up to 30 days after you receive your order. We can provide a return label. Please contact us or start a return from your account dashboard.
  • Is this the right part?
    If you are unsure if it’s the right part for your application give our experts a call at 231-767-5055.
Worldwide Shipping
Customer Support
Secure Shopping
30-Day Returns