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Supertech 15.50mm Max Lift Dual Valve Spring Kit SPRK-H1000D-1FZ for High RPM Performance - SPRK-H1000D-1FZ

If you're diving into the world of high-performance engines, you’ll want to check out these Supertech valve springs. They’re crafted from a premium Super Clean Chrome Silicon Vanadium Steel alloy, which means they’re built to handle the kind of RPMs that would make lesser springs weep. Seriously, these springs are designed with durability in mind, especially when the pressure's on.

What really sets them apart is the thoughtful engineering behind them. Using advanced computer design, these springs keep wire stress levels well within the safe zones outlined in fatigue diagrams. This attention to detail means they can take a beating without losing their edge. Plus, the software helps manage harmonics, so you won’t have to worry about any unwanted vibrations messing with your ride.

Now, let’s talk about the retainers. They're made from a high-quality, military-certified Titanium alloy, and they’re CNC machined for a fit that’s as snug as a glove. This means they’re not just durable; they’re also reliable, ensuring that everything stays in place even when you're pushing your engine to its limits.

Here’s a quick rundown of the specs, just so you know what you’re getting into:

  • Seat Pressure: 82 at 36.20
  • Open Pressure: 208 at 11
  • Max Lift: 15.50mm
  • Coil Bind: 20.70mm
  • Rate: 11.5
  • Kit spring: SPR-H1000D
  • Kit spring qty: 24
  • Retainer: RET-H70/T1
  • Retainer qty: 24
  • Seat Locator: SEAT-H/N240
  • InnSpr.ID: 15.50mm
  • InnSpr.OD: 20.50mm
  • OutSpr.ID: 21.85mm
  • OutSpr.OD: 29.65mm
  • Seat Locator qty: 24

All in all, if you’re looking to up your engine game, the SPRK-H1000D-1FZ Supertech dual valve spring kit is a solid choice. With a max lift of 15.50mm and all those other features, you’re set for some serious performance. Whether you’re hitting the track or just want your ride to feel a bit more alive, these springs are worth considering.

Other Part Numbers:
Supertech #sptSPRK-H1000D-1FZ

Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

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Who is Supertech?

Supertech is a company located in Silicon Valley San Jose, California. It is the place where companies with the most cutting-edge technology are located. It allows Supertech to gain access to the latest technology that helps them create high-quality products.  Supertech is known for manufacturing some of the best aftermarket internal engine parts in the industry. Today, they are considered the leading brand in their market segment.

Valve Train Component Experts

With over 30 years of experience, Supertech was able to develop products that meet the demands of their customers. They offer high-performance valves and valvetrain components that are used by many engine builders and tuners everywhere.

Racer’s Brand Of Choice

Supertech provides the motorsport industry with top-notched products for virtually any type of racing discipline. Whether it’s Road Racing, Drag Racing, or Rally, they have the right parts for you. Each piece is carefully designed and manufactured to provide optimum performance and give racers the competitive advantage they need to win championships.

Purchase Supertech Products At Vivid Racing

If you are in the market for high-quality performance parts for your engine, Supertech is the brand for you. The company has always been on edge in creating innovative products that would keep up with the fast-changing automotive trend. Whether for the tracks or the street, Supertech guarantees that you will only get the best products from them. To know more about Supertech, visit Vivid Racing and check out their list of parts that fit your specific needs.



Due to the nature of the application, these parts are sold without any express warranty or any implied warranty of merchantability, or fitness for a particular purpose.

Supertech Performance Inc. shall not, under any circumstances, be liable for any special, incidental or consequential damages, including, but not limited to, damage, or loss of property or equipment, loss of profits or revenue, cost of purchased or replacement goods, or claims of customers of the purchase, which may arise and/or result from sale, installation or use of these parts.

The sole obligation of Supertech Performance Inc., shall be limited only to the products to be found defective, in either workmanship or material, after inspection performed by our company. This Limited Warranty applies only to the original purchaser of the product and only covers the replacement or repair of the product at our election.

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