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

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.

-   Revs up to 10,000 RPM with Manley titanium retainers
-   Designed to handle aftermarket camshafts
-   Wound from super clean alloy

This Part Fits:

Year

Make

Model

Submodel

2005-2006

Saab

9-2X

Aero

2002-2012

Subaru

Impreza

WRX

2006-2007,2010-2012

Subaru

Impreza

WRX Limited

2009-2012

Subaru

Impreza

WRX Premium

2004-2012

Subaru

Impreza

WRX STI

2007,2011-2012

Subaru

Impreza

WRX STI Limited

2010

Subaru

Impreza

WRX STI Special Edition

2006-2007

Subaru

Impreza

WRX TR

## Details

- **Price:** 492.73 CAD
- **Vendor:** Manley Performance
- **Type:** Valve Springs, Retainers

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 492.73 CAD | In stock |

## Images

- Photo - Primary
- Photo - Primary
- Photo - out of package
- User 1
- User 1
- User 1

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/manley-subaru-wrx-sti-ej20-ej25-16pc-valve-springs-1-126-640-for-use-w-23185-16-retainers)
> Updated: 2026-06-28