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  • Shipping info

    We deliver worldwide and to almost all countries. Call us at 704-871-0721 to get help with large international orders and we can help manually check the shipping for you. MORE INFO BELOW in Shipping Info section.

  • Payment methods

    Accepted payment methods

  • Return Policy

    We accept returns for up to 30 days from the purchase date. To be eligible for a return, your item must be unused and in the same condition that you received it. More Return Info below. 

InStock and can Ship Today!

This spring will last 2 to 3 times longer and give you 2-8 additional pounds of seat & 10-18 more pounds open pressure. They look and install exactly like the New Beehive springs for the GM Crate engines, But these springs are made by us.  The valve spring creation process is far more involved than most people realize. Selecting the right metal stock and creating the best design is not done by chance. CTS have developed a process that creates the highest quality valve spring available. The result is a product that meets and exceeds the expectations of today’s engine builders and racers.

They are Cryogenic treated for extra-long life and Stable Rate. (Doesn't fall off like stock springs do).

 Crate Engine  604 Fits: LS1, LS2, LS3 & LS6. 

With a .570" maximum lift; these Beehive Valve Springs from Circle Track Supply are exact replacements for our GM 604 Crate engine. They allow big block engines to turn more RPM too. The unique Beehive shape handles valve train stress more efficiently to eliminate damaging harmonics and increases high RPM horsepower and durability. The oval/multi-arc wire shape places the maximum area of the wire at the point of highest stress to handle valve train stress more efficiently and allow better heat dissipation for longer life. Because of the unique Beehive design, the valve train can handle more RPM and more aggressive cam profiles. Will work with 1.5 & 1.6 rocker ratios.

Beehive Valve Springs

Cheater Replacement for GM 604 Crate engine (GM # 12499224)

Solid blue color to match OEM Spring, Some new engines are now coming unpainted from GM, which may require stripping paint to be an exact match. 

Can use 1.5 or 1.6 rocker

1.29" O.D.

1.085" Coil Bind Height

375 lbs. /in. Spring Rate

1.25" Open @ 310-320 lbs. pressure

1.8" installed (seat) height at 100 lbs. pressure

Max Lift .570"

Set of 16

Springs Match Light Blue OEM GM Color

No Machining required on outside OD of spring seat. Fits out of the box. Just Shim to height if needed-(Shims Sold Separately).

Our Customers Rave about these springs!

Especially Designed Coil Material with our “Variable Rate” that allows More RPM Capability and Much Better Endurance (i.e. All Season Long).

Requires different Retainer, Keepers and Locator than older style spring.

Use GM Factory Retro Beehive Retainers, Keepers and Valve Spring Seats-Sold Separately.

16 - #19301707 valve spring seat

16 - #19303149 valve spring retainer

32 - #19302868 split key locks 




    • Weight
      3.85 lbs
    • SKU
  • Manufacturer
    604, CT525

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  • Jan 1, 1970, 03:00
    Take my word for it.
    buy Blade & Soul gold

Products typically ship out between the same day and 1-3 days. Depending on the time/day ordered and the product type. Some products are made to order to spec and will ship once built. Feel free to call us at 704-871-0721 if you have any questions about shipping. Also call us if you are ordering large items like race car bodies as those are hard for the freight system to calculate sometimes and it will overestimate. Thank you.

We accept the following payment methods:

Accepted payment methods

And now Venmo & PayPay Credit

Our policy lasts 30 days. If 30 days have gone by since your purchase, unfortunately, we can’t offer you a refund or exchange.

To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging. If the return is not based on a mistake on our part, a 15% restocking fee will apply.

Several types of goods are exempt from being returned. We also do not accept products that are hazardous materials, flammable liquids, or gases.

Additional non-returnable items:
* Gift cards
* Downloadable software products

To complete your return, we require a receipt or proof of purchase.

Please do not send your purchase back to the manufacturer. *Special cases might be returned to the manufacturer*

There are certain situations where only partial refunds are granted: (if applicable)
* Book with obvious signs of use
* Any item not in its original condition, that is damaged, or is missing parts for reasons not due to our error.
* Any item that is returned more than 30 days after delivery

Refunds (if applicable)
Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.
If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.

Late or missing refunds (if applicable)
If you haven’t received a refund yet, first check your bank account again.
Then contact your credit card company, it may take some time before your refund is officially posted.
Next, contact your bank. There is often some processing time before a refund is posted.
If you’ve done all of this and you still have not received your refund yet, please contact us at

Sale items (if applicable)
Only regular priced items may be refunded, unfortunately, sale items cannot be refunded.

Exchanges (if applicable)
We only replace items if they are defective or damaged, or if we made the mistake.  If you need to exchange it for the same item, send us an email at and send your item to 304 5th Creek Road, Statesville, NC, 28625, United States.

To return your product, you should mail your product to:
304 5th Creek Road, Statesville, NC, 28625, United States.

You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund.

Depending on where you live, the time it may take for your exchanged product to reach you may vary.

If you are shipping an item over $75, you should consider using a trackable shipping service or purchasing shipping insurance. We don’t guarantee that we will receive your returned item.

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