.png)
BMW M52 owners modify their engines for one reason: the platform rewards it. Whether the goal is sharper throttle…
January 6, 2026
Who We Are
Global Reach, Local Support
Serving South Africa, the UK, and Mexico City—quality parts, worldwide.
Built on Expertise
Founded by Simon Johnstone in 2003, with over 34 years in performance engineering.
Performance, Powered
From motorsport roots to global reach—STK delivers quality, reliability, and value.
Engineered to Perform
STK delivers precision-crafted camshafts and valve train parts—built for power, made to last.