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Ready To Ship S63 High Performance Valve Spring Kit | Bmw M5/m6/m8/x5m/x6m Markdown: -30% [vYJMeuyV]

$75.99 $243.99 -69%

S63 High Performance Valve Spring Kit Elevate the performance of your BMW M5/M6/M8/X5M/X6M with our premium S63 High Performance Valve Spring Kit. Designed for those seeking to maximize engine power and longevity, this kit includes high-performance v

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Ready To Ship S63 High Performance Valve Spring Kit | Bmw M5/m6/m8/x5m/x6m Markdown: -30% [vYJMeuyV]

S63 High Performance Valve Spring Kit

Elevate the performance of your BMW M5/M6/M8/X5M/X6M with our premium S63 High Performance Valve Spring Kit. Designed for those seeking to maximize engine power and longevity, this kit includes high-performance valve springs that offer a 20% increase in spring pressure without compromising on durability. Our steel retainers ensure long-term reliability, making this kit a perfect choice for both track and road applications.

Engineered for Optimal Performance

At Steve Dinan Engineering, we understand the importance of balanced valve spring pressure. Our kit is designed to minimize energy loss by providing just enough pressure to keep the follower in contact with the camshaft, without excessive compression that can rob power. This approach not only enhances performance but also reduces valve train wear. Our springs are meticulously engineered to manage the inertia from increased RPM and maintain the necessary seat pressure to prevent valve bounce, ensuring a seamless and efficient engine operation.

Boosted Engine Optimization

For boosted engines, our valve spring kit offers a slight increase in pressure to counteract the intake boost pressure, without overcompensating. This ensures that your engine can effectively manage the additional inertia at higher RPMs, without requiring a doubling of spring pressure. Our kit is optimized to provide the perfect balance between controlling boost pressure and managing valve train mass, delivering an additional 20% of valve spring pressure for optimal performance. Trust our expertise and experience to enhance your BMW's power and efficiency with our S63 High Performance Valve Spring Kit.

What Our Customers Say

January 26, 2026

Absolutely no complaints!

The quality is really and so very impressive.

- Eurwen R..

January 26, 2026

Absolutely no complaints!

An exceptional item. My highest compliments.

- Leander R..

January 26, 2026

Absolutely no complaints!

The performance is smooth and highly dependable.

- Yancy Y..

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