The Manley Valve Spring Kit (22180-16) is engineered to support high RPM, turbocharged applications in select engines (notably sport-compact and Subaru WRX / STI. Designed for serious performance builds, these valve springs offer enhanced durability, precise fitment, and reliable operation under extreme conditions.
Key Features & Benefits:
Optimized spring rate (245 PPI) and match for high lift up to ~0.525 inches — ideal for upgraded cams or high-revving setups.
Outer diameter 1.050″, inner diameter 0.755″, coil bind height 0.845″ — engineered to maintain stability and prevent coil bind at high rpm.
Includes 16 springs — typically covers a 4-cylinder (dual overhead cam) application — ensures consistent performance across all valves.
Built for “Sport Compact” applications; ideal for turbocharged Subaru platforms, track use, or major engine upgrades.
Manufactured by Manley Performance, a recognized name in high-end performance engine components — offering quality and dependability.
For use with Manley 23180-16 Retainers
Whether you’re building a track car, preparing for high RPM performance, or upgrading your engine’s valvetrain for forced induction, the Manley Valve Spring Kit (22180-16) delivers a high-level solution to keep your valvetrain in control and responsive.
