HKS 19.8N/MM HELPER SPRING SET

When you're rebuilding the top end of your engine, especially if you're aiming for a specific performance setup, the right hardware makes all the difference. This HKS helper spring set, with a spring rate of 19.8 N/mm, is designed to work with your existing main springs to ensure proper valve control under demanding conditions.

These helper springs are well-built and add a consistent preload to the valve spring assembly. This helps prevent valve float at higher RPMs by keeping the main springs seated correctly, even during rapid valve actuation. They are a popular choice for tuners looking to fine-tune their engine's response and reliability.