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  See all Engine products
Supertech 6.0mm Valve Stem Steel Retainer for BMW S54 M3 (RET-BM2521-1-ST) - RET-BM2521-1-ST

If you're diving into the world of performance engines, you’ve probably heard of Supertech. With over 20 years under their belt, they’ve been crafting racing valves and valve train components that really stand up to the test. I’ve had my fair share of experiences with their products, and I can tell you, they don’t mess around when it comes to quality. They put in the hours, working closely with engine builders to refine their offerings, ensuring that every part is up to snuff for whatever racing scene you’re into.

Whether you’re tearing up the drag strip, navigating the twists of a rally, or pushing the limits on a road course, Supertech has got you covered. Their valves are designed for virtually every type of motorsport, so you can trust that you’re getting something that’s been tried and tested in the real world. And if you happen to have a unique setup or specific needs, they’re more than willing to collaborate on a custom solution. That’s the kind of service you don’t see every day.

Take the Supertech BMW S54 M3 (SPR-2521 2) 6.0mm Valve Stem Steel Retainer, for example. It’s engineered to withstand the rigors of high-performance applications. The 6.0mm valve stem is no joke—it’s built for durability and precision, ensuring that your engine runs smoothly even at high RPMs. The steel construction means it can handle the heat and pressure without flinching. It’s the kind of reliability you want when you’re pushing your machine to its limits.

Just a heads up, the images you see are for marketing purposes, so the actual product might look a bit different. But trust me, the quality is there. If you’re serious about taking your ride to the next level, you owe it to yourself to check out what Supertech has to offer. You won’t be disappointed.

Other Part Numbers:
Supertech #sptRET-BM2521-1-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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