Supertech Nissan SKYLINE RB25 DOHC 24V (w/Hydraulic Lifters) Single Valve Spring Kit

This kit from Supertech gives you everything you need to upgrade the valve springs on your Nissan Skyline RB25 DOHC 24-valve engine, specifically models equipped with hydraulic lifters. You'll receive a set of single valve springs and matching retainers, all designed to work together for improved valvetrain stability.

When you're pushing an RB25 engine, especially if you're looking to increase RPMs or run a more aggressive camshaft profile, the stock valve springs can become a limiting factor. They might not have enough seat pressure or enough open pressure to keep the valves under control at higher engine speeds. This Supertech kit addresses that by providing well-built springs with a higher rate, which helps prevent valve float. The included retainers are made to match the springs, ensuring a solid setup. This is a common upgrade for tuners looking to get the most out of their RB25, whether for street performance or track use.

Upgrading your valve springs is a critical step when modifying your engine's performance. It's important to ensure your entire valvetrain is up to the task. This kit is designed for direct replacement of the factory components, but as with any internal engine work, careful attention to detail during installation is key. Make sure to follow the manufacturer's recommended procedures for setting valve spring height and ensuring proper seating.