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Engines and Components› Camshafts and Valvetrain

Manley Performance

Manley Subaru WRX/STI (EJ20/EJ25) 16pc Valve Springs (1.126/.640) (For use w/ 23185-16 Retainers)

$358.51 $340.58 Save $17.93

SKU: M004 22185-16

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Special Order
Ships in 4–6 weeks
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

Part #: 22185-16

Engineered for today's high-revving sport compact engines, Manley valve springs deliver exceptional durability, precise control, and consistent performance. Manufactured from premium alloys and designed for demanding turbocharged and naturally aspirated applications, they ensure reliable valvetrain stability at elevated RPM and boost levels.

Manley Valve Spring, SPRING-SUBARU WRX .

This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

MIA's Description

Unlock the full potential of your Subaru engine with the Manley Performance Single Conical Valve Spring Set, engineered for 2002-2014 WRX, 2004-2014 Subaru WRX STI, 2005-2012 Legacy GT, and 2004-2013 Forester XT models. This premium valve spring set is designed to safely exceed OEM rev limits, making it perfect for high-lift camshafts and built motors with larger turbos or aggressive cams. Crafted from high-grade steel, the set includes springs for both intake and exhaust valves, ensuring durability and consistent performance under extreme RPM conditions. The single conical design enhances valve control and reliability during spirited driving, drag racing, and time trials where engine precision is critical. Ideal for Subaru enthusiasts seeking a reliable upgrade to their valve train, this Manley valve spring set delivers improved performance and engine longevity. Trust Subimods for quality Subaru parts and elevate your WRX, STI, LGT, or FXT with confidence. Shop now to enhance your Subaru’s performance and reliability.

Fitment

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandManley Performance
Part NumberM004 22185-16

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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