Manley 16pc Valve Spring Set (1.050/.755) Subaru WRX 02-14 / STI 04-21 | 22180-16

Product Fitment:

2002-2014 Subaru WRX

2004-2021 Subaru STI

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.