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Supertech Dual Valve Spring Kit for Honda F20C - 80x40.4/215x12, 16 Springs, 80 Seat Pressure - SPRK-H1022D-ST

If you're diving into the world of performance upgrades for your Honda F20C, the Supertech 80x40.4/215x12 Dual Valve Spring Kit is definitely worth a look. I've had my hands on these springs for a while now, and let me tell you, they deliver the kind of performance that makes a real difference on the track.

First off, the seat pressure is set at 80 @ 40.4, which gives you a solid foundation for those high-revving adventures. When you push the limits, the open pressure jumps to 215 @ 12, ensuring that your valves stay in check even when the engine is screaming. This kit is designed for serious enthusiasts who want to squeeze every bit of power from their setup.

One of the standout features is the max lift of 18.30mm. This means you can really open up those valves and let your engine breathe. And if you're worried about coil bind, the kit has you covered with a solid 22.00mm limit. The rate sits at a robust 11.2, making these springs perfect for both daily driving and track days.

Inside the kit, you’ll find 16 springs (SPR-H1022D) along with 16 retainers (RET-HBK-ST) and 16 seat locators (SEAT-H1020DS). Everything is designed to work together seamlessly, so you can focus on what really matters—getting out there and enjoying the ride. The inner spring dimensions are pretty standard, with an inner diameter of 15.50mm and an outer diameter of 21.00mm for the inner springs, while the outer springs have an inner diameter of 21.80mm and an outer diameter of 30.00mm.

This is a complete kit, and it fits perfectly with the Honda F20C. If you're looking to take your engine's performance to the next level, these springs are a solid choice. They’re built to handle the demands of high RPMs while keeping everything running smoothly. Trust me, once you install these, you’ll feel the difference right away.

Other Part Numbers:
Supertech #sptSPRK-H1022D-ST

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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