Supertech Mitsubishi 4G63 Dual Valve Spring Kit

These Supertech dual valve springs are made from high-tensile chrome silicon wire, a material chosen for its ability to handle the stresses of high-performance engine operation. This kit is specifically designed for the Mitsubishi 4G63 engine, a popular choice for tuners and racers looking to push their engines beyond stock limits. The dual spring design helps to prevent valve float at higher RPMs, ensuring that your valves close reliably and maintain proper timing, which is crucial for preventing engine damage and maximizing power output.

When you're building a 4G63 for serious performance, especially with a more aggressive camshaft or forced induction, the stock valve springs often become a limiting factor. They simply can't keep up with the demands of faster valve events and increased cylinder pressures. This Supertech kit addresses that by providing a well-built spring solution that can handle the increased lift and higher engine speeds. The chrome silicon wire offers a good balance of strength and fatigue resistance, meaning these springs are built to last through many cycles of demanding use. This attention to material and design means you can be more confident in your engine's ability to perform consistently under pressure.

This kit includes the necessary dual valve springs to replace your stock components. It's important to note that when upgrading valve springs, especially for high-performance applications, it's often recommended to also consider upgrading valve retainers and seats to ensure full compatibility and optimal performance. Always refer to the manufacturer's installation instructions for detailed guidance on proper installation and any associated hardware requirements for your specific engine build.