Valve Failure Analysis
Understanding how and why engine valves fail is critical for any engine builder or tuner. This guide covers the most common types of valve damage, what causes them, and how to prevent them.
Valve Spring Failure Analysis
Valve springs are among the hardest-working components in any performance engine. Understanding how and why they fail helps you build engines that last — and avoid catastrophic damage.
Tech Articles
Why Your New Performance Camshaft Delivers Even Better Results with the Right Supporting Components
A performance camshaft is one of the most effective upgrades you can make to an engine. Whether you’re building a responsive street car, a powerful weekend toy, or a dedicated competition vehicle, a camshaft upgrade can unlock significant performance gains by improving airflow and optimizing the engine’s power delivery. However, a camshaft is only one […]
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Choosing the Right Camshaft for Your Engine: The Complete Performance Guide
When building a performance engine, the camshaft is one of the most important components in the entire setup. It determines how your engine breathes, where it makes power, how aggressive it sounds, and whether the car feels enjoyable on the street or only comes alive at high RPM. At STK Performance, the camshaft range is […]
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Built to Unlock Real Turbo Performance – STK Opel Corsa 270/264HT Turbo Camshaft
When building a turbo Opel Corsa 8-valve engine, one of the biggest restrictions in the setup is often the factory camshaft. While the standard cam profile is designed for smooth daily driving, fuel economy, and reliability, it quickly becomes a limitation once boost, airflow, and performance upgrades are introduced. That’s where the STK Opel Corsa […]
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High-Performance Valvetrain Upgrades for Ford ST Engines
When building or upgrading a high-performance Ford Duratec engine, one of the most critical yet often overlooked components is the valvetrain—specifically, the valve springs. The STK Single Valve Spring Kit for Ford ST150/170 is designed to handle the increased demands of modified engines, ensuring reliability, stability, and performance at high RPM. Product Overview The STK […]
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The Small Upgrade That Solves Big Problems: Mazda MPS Single Valve Spring Kit
When building or upgrading a performance engine—especially something like a Mazda MPS—most people focus on the obvious: bigger turbos, aggressive tuning, and upgraded fueling. But one of the most critical components is often overlooked: the valvetrain. More specifically, the valve springs. The STK Performance Single Valve Spring Kit for Mazda MPS is designed to solve […]
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Racing Valve Spring Kit Nissan SR20 – The Upgrade Your Build Actually Needs
When it comes to pushing the legendary Nissan SR20 engine beyond factory limits, most builders focus on turbos, fuel systems, and tuning. But one of the most overlooked — and most critical — components in a high-performance engine is the valvetrain. And more specifically… the valve springs. If you’re chasing higher RPM, bigger cams, or […]
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STK Performance Valve Springs Explained | Golf GTI, Audi TTRS & RS3 Performance Upgrade | RestoModSA
STK Performance Parts: Harder Valve Springs & Higher RPM Explained | RestoModSA
STK Performance Parts: Single Valve Spring Explained | RestoModSA
Why Forged Valves Matter | Inside STK Performance Racing Valve Engineering | car modify | RestoModSA
