JE Pistons and Rings 99.5 Bore 83mm Stroke 8.5:1 Comp Subaru WRX / STI EJ257 2004-2021

Part #: 291063. JE piston and ring sets are expertly designed for extreme conditions, including professional competitions, in your Subaru WRX and STI. In high - stress scenarios with high compression ratios, maximum boost, or heavy nitrous use, the 2618 aluminum alloy with high tensile strength is a must - have. Fitment: These JE Pistons and Rings are suitable for SUBARU 2004+ IMPREZA STI, 2005+ FORESTER XT, LEGACY GT, and 2006+ WRX EJ257. Key features: Made of 2618 T6 high - tensile forged aluminum. The dome and dishes have smooth - flowing radii for great flame travel. It comes with 1.2 x 1.2 x 2.5mm ring widths. A.905 x 2.500 straight - wall carbon steel wrist pin is provided. Pin fitting and wire locks are included. Each set contains 4 pistons and 4 rings.

Using these JE pistons and rings is straightforward. First, make sure your engine is clean and in good condition before installation. Carefully place the pistons and rings in the correct positions according to your engine's specifications. When it comes to maintenance, regularly check the pistons and rings for any signs of wear or damage. You can do a visual inspection during oil changes. If you notice any issues like excessive wear or cracks, it's time to replace them. Also, always use high - quality engine oil to reduce friction and extend the lifespan of these parts. Keep in mind that these are designed for extreme applications, so if you're using them in a high - performance setting, monitor your engine's performance closely.