GSC P-D Subaru EJ20 JDM / Euro Spec STi S3 Cams 282/282 (Not compatible w/USA Spec Engines) Billet

GSC Power Division is well-known for making solid engine components, and these S3 camshafts for the Subaru EJ20 JDM/Euro spec engines are a prime example. If you're looking to get more out of your performance-built Impreza, these cams are designed to help your engine breathe better and make more power, especially when paired with other engine modifications. They are specifically designed for JDM and Euro spec EJ20 engines and are not compatible with USA spec versions.

These camshafts feature a 282-degree duration on both the intake and exhaust sides, which is a fairly aggressive profile. This means the valves will stay open longer, allowing for a greater volume of air and fuel mixture into the cylinders and a more efficient expulsion of exhaust gases. This profile is ideal for builds focused on high-RPM power and track use. They are made from billet material, which is strong and stable, ensuring consistent performance and durability under demanding conditions. The S3 designation indicates GSC's specific grind profile for this application, aiming for a notable increase in horsepower and torque, particularly in the mid-to-upper RPM range.

When installing these camshafts, it's important to ensure your engine is set up to take full advantage of their capabilities. This typically involves supporting modifications like upgraded valve springs, retainers, and potentially ECU tuning to optimize fuel and ignition timing. Because these are performance cams, they are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and setup procedures.