STK Performance The Ultimate in Engine Performance
For over two decades, STK Performance has been a name synonymous with quality and reliability in the world of engine components. From chilled cast and machined billet camshafts to chrome silicone valve spring kits and stainless steel valves, STK provides high-performance parts to meet the needs of both professional mechanics and automotive enthusiasts. With locations in South Africa, the United Kingdom, and Mexico City, their global reach is matched by their dedication to producing world-class engine components.
Understanding the Heart of Performance: Camshafts
At STK Performance, camshaft manufacturing is one of the pillars of their expertise. They offer two primary types of camshafts, each tailored to different performance needs:
- Chilled Cast Iron Camshafts - The team at STK believes that "if it ain’t chilled cast, it ain’t good enough." Using the chilled cast iron process for mass production, these camshafts offer superior durability. During production, the iron is rapidly hardened (or "chilled") to form a carbide matrix on the camshaft lobes, making it exceptionally scuff-resistant. This level of durability is crucial for performance engines, ensuring long-lasting reliability even under intense conditions. This method is so effective that it’s used for many of STK’s standard camshafts as well.
- Machined Billet Camshafts - For those seeking even greater precision and performance, STK also offers machined billet camshafts. These camshafts are crafted from a solid steel bar and then nitride hardened after grinding, a process that strengthens the camshaft lobes for improved longevity. Though more costly due to the labor-intensive production process, the end result is a high-spec camshaft that delivers excellent performance in low-quantity, custom builds.
When it comes to high-lift camshafts and high-revving engines, STK’s competition valve springs and retainers are a must-have. Their valve springs are made from chrome silicone, which provides exceptional strength and durability. Rated up to 8500 RPM and capable of handling up to 14.1mm of camshaft lift, these springs ensure that your engine runs smoothly, even under intense conditions.
For added performance, STK’s valve spring retainers are made from Chromoly 4140, a material known for its lightweight properties and incredible strength. This combination helps eliminate coil bind and valve float, common issues that can damage your engine at high RPMs.
However, proper installation is crucial to avoid any damage. STK advises having the valve springs and retainers installed by a master mechanic or automotive engineering specialist, especially if cylinder head modifications are needed. Incorrect installation can lead to severe damage to the camshaft, valve train, or even the engine itself.
The Importance of Choosing the Right Valve Spring
Motorsport engines are built for high-performance conditions. While a standard valve spring works fine in a production vehicle, it can’t handle the extreme demands placed on a competition engine. Running at high RPMs for extended periods requires components that can withstand high lift, high duration camshafts without failure. Installing the wrong valve springs can lead to valve float or coil bind, which may result in catastrophic engine failure.
STK’s performance valve springs are specifically designed to handle these extreme conditions, making them the perfect choice for anyone looking to push their engine to its limits. With proper installation, they provide the durability and reliability that serious performance enthusiasts demand.
The Man Behind the Brand: Simon Johnstone
STK Performance was founded in 2003 by Simon Johnstone, a South African industry veteran with over 34 years of experience. Simon’s expertise in parts interpretation and management, coupled with his passion for cylinder head components, has driven STK’s growth from a local South African business to a global brand. His time with VW Motorsport and Audi Sport South Africa further honed his skills, allowing him to develop an internationally recognized range of performance camshafts and valve train products.
Under Simon’s leadership, STK Performance has expanded its operations to serve customers worldwide, with offices in South Africa, the United Kingdom, and Mexico City. His dedication to quality and service ensures that STK Performance continues to deliver top-tier products to customers around the globe.
The STK Difference: Quality, Reliability, Affordability
At the core of STK Performance is their commitment to providing engine parts that meet the highest standards of quality, reliability, and affordability. Whether you're an automotive professional or a passionate enthusiast, you can trust STK to deliver parts that will elevate your engine’s performance.
From chilled cast camshafts to competition-grade valve springs, STK Performance has you covered, no matter where you are on your performance journey.
STK Performance now available on RestoMod.co.za
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