Manley 98-05 Subaru WRX EJ20 92.50mm Bore 8.5:1 CR -16cc Dish 79mm Stroker Piston Set (E/D)

If you're building a high-performance EJ20 engine for your 1998-2005 Subaru WRX, a strong set of pistons is crucial. This stroker piston set from Manley Performance is designed to handle the demands of a modified engine, offering improved strength and reliability over stock components. They feature a 92.50mm bore and a -16cc dish, resulting in an 8.5:1 compression ratio, which is ideal for boosted applications where you need to control detonation.

Manley uses domestic 2618 alloy forgings for these pistons, a material known for its exceptional strength and durability, making them well-suited for engines that see hard use. The pistons also come with premium chrome moly wrist pins, and Manley's unique fixturing process ensures the ring lands and skirt machining are perfectly square, which helps achieve a better ring seal and extract more power. The cam and barrel skirt profiles are carefully designed to reduce friction and wear on your cylinder walls, even under high loads.

This set includes four pistons, each with a 79mm stroke dimension, and is a popular choice among professional engine builders for its robust construction and performance-oriented design. Keep in mind that these pistons are not CARB approved and cannot be shipped to California. For a complete build, you'll want to ensure you have the correct rings and connecting rods to match these specifications.