JE Pistons and Rings 100 Bore 83mm Stroke 8.5:1 Comp Subaru WRX / STI EJ257 2004-2021

Part #: 291064. JE piston and ring designs are expertly crafted for extreme uses, even in professional competitions for your Subaru WRX and STI. In high - demand situations with high compression ratios, maximum boost, or heavy nitrous use, the 2618 aluminum alloy with high tensile strength is a must. Fitment includes SUBARU 2004+ IMPREZA STI, 2005+ FORESTER XT, LEGACY GT, and 2006+ WRX EJ257. Key features: Made of 2618 T6 high - tensile forged aluminum. 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. The set has 4 pistons and 4 rings.

Using these JE pistons and rings is straightforward. First, make sure your Subaru WRX or STI engine is clean and free of debris before installation. Carefully fit the pistons and rings according to the provided instructions. When it comes to maintenance, regularly check the engine oil level and quality. If you notice any strange noises or a decrease in performance, it might be time to inspect the pistons and rings. Avoid over - revving the engine, especially during the break - in period. Also, don't use the engine under extreme conditions right after installation. Make sure to follow the manufacturer's recommended maintenance schedule to keep your engine running smoothly with these pistons and rings.