For years, a common misconception has circulated in the tuning world: “Camshafts don’t make a difference on turbocharged engines.” At STK Performance, we’ve proven that statement wrong. With the release of our 252/262H camshaft set, we’ve shown clear, measurable gains backed by dyno results – not theory. Why Turbo Engines Benefit from Cams

Bring your classic VW 8-valve to life with a valvetrain package engineered as a system. STK Performance offers VW 8v camshaft kits in both hydraulic and solid lifter configurations—paired with forged performance valves, racing valve spring kits, and chromoly retainers. Choose a complete, drop-in bundle or mix-and-match individual component kits to build exactly what your engine and

The Ford Kent engine—a legendary powerplant found in everything from classic Escorts and Capris to Formula Ford race cars—has earned a reputation for being robust, tuneable, and high-revving. For enthusiasts looking to push this engine further, upgrading the valve train is essential. One of the most critical components in that

When pushing the limits of classic Nissan A-series engines such as the A14 and A15, the right valve train components become essential. Whether it’s for motorsport, spirited street use, or turbocharged setups, STK Performance dual valve springs are engineered to offer exceptional control, durability, and reliability at high RPMs —

The Mazda FE3 16-valve engine is a solid platform for naturally aspirated or turbocharged performance builds. Known for its strong bottom end and high-flow cylinder head, the FE3 responds incredibly well to tuning. However, pushing it beyond factory limits demands upgrades to the valvetrain—starting with the valve springs. STK Performance

The legendary Volkswagen ABF 2.0L 16V engine is renowned for its high-revving nature and motorsport pedigree. Whether you’re building a naturally aspirated screamer or a turbocharged street monster, upgrading the valvetrain is essential for maximizing performance. STK Performance offers industry-leading valve springs and forged performance valves tailored specifically for the