Supertech Ford/Mazda Duratec Single Valve Spring Kit - 55lbs at 35mm

The Supertech Ford/Mazda Duratec Single Valve Spring Kit is a high-performance component designed to enhance valve operation in Duratec engines. Engineered with precision, this kit features springs rated at 55 pounds of force at a 35mm installed height, ensuring consistent valve control under high RPM and aggressive driving conditions. Constructed from durable materials, these springs provide reliable performance and longevity, making them suitable for both stock and modified engine setups. The kit is an ideal upgrade for enthusiasts seeking improved valve stability, increased power potential, and enhanced engine responsiveness.

This spring kit is compatible with Ford and Mazda Duratec engines, typically used in various models from the early 2000s onward. It serves as a direct replacement for stock valve springs, offering a straightforward bolt-on installation for performance upgrades or rebuilds. Suitable for street, track, or racing applications, the kit includes all necessary components for a complete upgrade. Proper fitment and application depend on specific engine configurations, so verifying compatibility with your vehicle is recommended before installation.