High-Performance Cylinder Head Components
Racing Camshafts • Valve Spring Kits • Forged Valves • Retainers • Lifters. Trusted by tuners, builders, and race teams worldwide — since 2003
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Premium cylinder head components for every build
New Arrivals
The latest additions to our range
Featured Products
Hand-picked by our team for quality and performance
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Trade pricing for workshops, engine builders, parts retailers and race teams
Trade pricing
Discounted rates across the full STK range, direct from the manufacturer.
Applied automatically
Your discount is worked out in the cart. No quotes to chase, no order forms.
Better rates on larger orders
The bigger the order, the better the rate — up to our wholesale tier.
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Find parts for your specific make and engine
Latest Articles
Technical insights, product breakdowns, and performance tips
Flexible Payment Options Now Available at STK Performance
A serious performance build is rarely just one purchase. You start with the camshaft. Then come the valve springs, retainers, forged valves and lifters. Before…
15 Years of Performance: Visiting 8V Performance
At STK Performance, some of our strongest relationships have been built over years of shared passion for performance, engineering and motorsport. One of those relationships…
Why Becoming an STK Performance Authorized Stockist Could Be the Next Step for Your Automotive Business
In the performance automotive world, having access to the right components can make all the difference. For workshops, engine builders, performance retailers and race teams,…
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Watch our products explained and tested on the RestoModSA channel
Ready to Build?
Need help choosing the right parts for your build? Our team has the expertise to guide you. Get in touch via WhatsApp or email — we respond fast.