Manley 1998+ Subaru WRZ (EJ205) 92mm Bore 79mm Stroke 8:5 Dish Extreme Duty Piston Set with Rings

Manley's Extreme Duty Piston Set uses domestic 2618 alloy forgings, a material known for its exceptional strength and performance under high stress. These pistons are specifically made for the 1998 and later Subaru WRX with the EJ205 engine, featuring a 92mm bore and a 79mm stroke with an 8.5:1 dish volume. This combination is designed to handle increased cylinder pressures and temperatures, making them a solid choice for performance builds where durability is key.

The design incorporates proven cam and barrel skirt profiles, which help manage piston movement within the cylinder walls, reducing noise and wear while still allowing for significant power gains. Manley also pays close attention to the exacting standards for ring lands and grooves. This precision ensures a better seal from the piston rings, which translates directly into more efficient combustion and ultimately, more power. The pistons come standard with premium Chrome Moly wrist pins, and Manley's unique fixturing process allows for skirt turning and ring groove machining in a single operation. This ensures the ring grooves are perfectly square to the piston skirt, further enhancing the ring seal and overall engine performance.

This set includes the pistons and rings needed for your engine rebuild. Please note that these pistons are not CARB approved and cannot be shipped to California. It's always a good idea to consult with your engine builder or tuner to ensure these pistons align with your specific build goals and supporting modifications.