What does AVCS compatibility mean for my engine?

AVCS stands for Active Valve Control System. This camshaft is designed to work with your vehicle's factory AVCS, which adjusts valve timing based on engine speed and load. This helps improve performance and efficiency across the RPM range.

Why is this camshaft only for the left intake side?

This camshaft is specifically manufactured for the left intake position of the EJ25 engine. It's often used for custom camshaft builds or when replacing only a single camshaft component.

What is the advantage of a billet camshaft?

A billet camshaft is machined from a solid piece of steel. This manufacturing process allows for very precise control over the lobe shapes and lift profiles, resulting in a strong and accurately formed camshaft.

GSC Power Division EJ25 Camshaft 7025S2LIN

Name: GSC P-D EJ25 WRX/STi AVCS Billet (Left Intake Cam Only)
Brand: GSC Power Division
SKU: gsc-power-division-gsc-p-d-ej25-wrx-sti-avcs-billet-left-intake-cam-only-t14-483791
Price: 304.13 USD
Availability: BackOrder

GSC P-D EJ25 WRX/STi AVCS Billet (Left Intake Cam Only)

$304.13

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

GSC Power Division EJ25 billet camshaft for WRX/STi. Left intake only.

Key Features

Fits Subaru WRX and STi models with the EJ25 engine.
Designed for the left intake camshaft position.
Compatible with factory AVCS (Active Valve Control System).
Constructed from a solid billet steel blank for strength.
CNC machined for precise lobe profiles.
Not CARB approved; cannot ship to California.

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Product Details

If you're looking to get more out of your Subaru WRX or STi's EJ25 engine, especially if you're rebuilding the top end or aiming for improved performance, this GSC Power Division billet camshaft for the left intake side is a solid option. It's designed to work with the factory AVCS (Active Valve Control System), meaning you retain that smart variable valve timing functionality that helps optimize power across the RPM range.

This camshaft is CNC machined from a solid billet steel blank, which is a strong way to build a performance camshaft. This process allows for precise control over the lobe profiles, which are updated from the stock design to help your engine breathe better. Because it's specifically for the left intake side, it's often used when building a custom camshaft setup or replacing just one worn or damaged cam. You'll want to ensure you have the proper supporting modifications and tuning to take full advantage of the improved airflow this camshaft offers.

Remember, this camshaft is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and any specific tool requirements.