Product Detail
Fitment: This piston set is specifically designed for 2002 - 2005 Subaru WRX models with the EJ205 engine. Features: Manley Performance forged and dished pistons for the EJ205 are crafted from high - strength 2618 material. They are lightweight yet built to last, offering a long service life. Each set comes with round wire locks, tool steel wrist pins, piston rings, and hardware at no extra cost. The proprietary multi - step top ring groove machining process ensures the best control of size, geometry, flatness, and finish. Precise pinhole machining results in an exact compression distance and accurate lock ring groove spacing. These pistons are available in standard size and a wide range of oversize/overbore options for high - performance engine builds. Key features include: sold as a full set of four pistons, dish piston type, inclusion of piston rings and hardware, 2618 high - strength material, and a lightweight design with an offset wrist pin for quiet start - ups. Specs: Bore size is 92 mm, rod length is 5.137 inches, stroke is 75mm STD STROKE (2.0L), comp distance is 1.285 inches, dome volume is - 12cc, cylinder head volume is 48cc, compression ratio is 8.5, and piston weight is 369 grams (0.81 lbs).
Using these Manley pistons in your 2002 - 2005 Subaru WRX EJ205 engine is straightforward. First, make sure your engine is properly prepared and clean before installation. Carefully follow the manufacturer's instructions for fitting the pistons, rings, and hardware. When starting up the engine after installation, you'll notice a quiet start thanks to the offset wrist pin design. For maintenance, regularly check the pistons for any signs of wear or damage. Since they are made of high - strength 2618 material, they are durable but still need proper care. If you notice any unusual noises or performance issues, it's a good idea to inspect the pistons right away. Also, when choosing oversize or overbore options, make sure they are compatible with your specific engine build requirements.
