Supertech Toyota 1FZ Dual Valve Spring Kit - SPRK-H100DR-1FZ

Valve Spring Kits

Supertech valve spring kits are the preferred choice of the world's best engine builders. Each kit pairs premium Superclean Chrome Silicon Vanadium steel alloy springs with high-quality CNC-machined retainers and, where required, spring seat locators — all matched as a complete, engineered valvetrain package.

Every spring is computer-designed to maintain optimal wire stress levels and controlled harmonics, ensuring superior stability and longevity in extreme conditions. Kits are engineered per application to deliver the correct installed height, seat pressure, and coil bind clearance for your engine.

Key Features

• Complete matched package: springs, retainers, and seat hardware as required
• Premium Superclean Chrome Silicon Vanadium steel alloy springs
• CNC-machined titanium alloy retainers on most applications
• Computer-designed for optimal wire stress and controlled harmonics
• Application-specific seat pressures, installed heights, and max lift
• Single, dual, beehive, and conical spring designs by application

Applications

The simplest way to build a reliable high-RPM valvetrain — one part number with every spring-side component engineered to work together for your specific engine.