JE Pistons and Rings 99.5 Bore 79mm Stroke 8.5:1 Comp Subaru WRX / STI EJ257 2004-2021

Part #: 291061. JE pistons and rings are specially crafted for extreme scenarios, even professional competitions in your Subaru WRX and STI. In high - stress conditions like high compression ratios, heavy boost, or nitrous use, the 2618 aluminum alloy with high tensile strength is a must. Fitment: Ideal for SUBARU 2004+ IMPREZA STI, 2005+ FORESTER XT, LEGACY GT, and 2006+ WRX EJ257. Features: Made of 2618 T6 high - tensile forged aluminum. The dome and dishes have smooth radii for great flame travel. Ring widths are 1.2 x 1.2 x 2.5mm. Comes with a.905 x 2.500 straight - wall carbon steel wrist pin. Pin fitting and wire locks are included. You'll get 4 pistons and 4 rings in the package.

Using these JE pistons and rings is straightforward. First, make sure your Subaru engine (2004+ IMPREZA STI, 2005+ FORESTER XT, LEGACY GT, 2006+ WRX EJ257) is clean and in good condition. Carefully install the pistons and rings according to the standard engine assembly process. Remember to use the provided wrist pin, pin fitting, and wire locks. When using your vehicle, avoid sudden and extreme acceleration right after installation to allow the pistons and rings to properly seat. For maintenance, regularly check your engine oil. If you notice any unusual noises or performance issues, it might be time to inspect the pistons and rings. Also, keep your engine clean to prevent debris from damaging these components.