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

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

SKU: man22180-16
Availability: 7 In Stock
Product Type: Engine Valve Springs and Retainers
$131.89
$138.83
$131.89
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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.

Specification Value
Title - Web Manley Valve Spring, SPRING-SUBARU WRX
Title Manley Valve Spring, SPRING-SUBARU WRX
Valve Spring Series Sport Compact
Valve Spring Type Single
Valve Spring Quantity 16
Valve Spring Outer Diameter (OD) 1.050″
Valve Spring Inner Diameter (ID) 0.755″
Valve Spring Coil Bind Height 0.845″
Seat Pressure 60 lbs @ 1.420″
Open Pressure 151 lbs @ 1.050″ / 187 lbs @ 0.895″
Valve Spring Rate 245 lbs/in
Stock Valve Lift 0.370″
Maximum Valve Lift 0.525″

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