Manley 98+ Subaru WRX (EJ205) STD Stroke 92mm STD Bore 8.5:1 Dish Piston Set with Rings

When you're rebuilding the engine in your 2002-2005 Subaru Impreza WRX, especially if you're aiming for more power or just want to ensure long-term reliability, a strong set of pistons is crucial. This set from Manley Performance gives you exactly that, including the pistons, premium chrome moly wrist pins, and the necessary rings to get your engine back together and running strong. These are designed for the EJ205 engine, with a standard bore and stroke, and a dish volume that results in an 8.5:1 compression ratio, making them a solid choice for many performance builds.

Manley uses domestic 2618 alloy forgings for these pistons, which are known for their strength and ability to handle higher performance demands compared to cast pistons. They also feature proven cam and barrel skirt profiles. This design helps the piston move smoothly in the cylinder, reducing wear on the cylinder walls while still allowing the piston to generate substantial power. The ring lands and grooves are machined to strict standards, which is key for getting a good seal with your piston rings, leading to better compression and more efficient power delivery. Manley's unique machining process ensures the ring grooves are perfectly square to the skirt, which is important for consistent ring seal under load.

This set includes everything you need to replace the pistons in your EJ205 engine, with standard bore and stroke dimensions. Remember that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper assembly and break-in procedures to ensure the longevity of your engine build.