JE Pistons and Rings 99.75 Bore 8.5:1 Comp Subaru WRX / STI EJ257 Block W/ EJ20 Head 2004-2021

Part #: 296349. JE piston and ring sets are expertly designed for extreme - performance needs, perfect for professional competition in your Subaru WRX and STI. In high - stress situations like high compression ratios, high boost, or heavy 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. Package includes 4 pistons and 4 rings.

Using these JE pistons and rings is straightforward. First, make sure your engine is clean and ready for installation. Carefully place the pistons and rings into the appropriate cylinders, following the instructions provided. When it comes to maintenance, regularly check the pistons and rings for any signs of wear or damage. After a long - term use, it's a good idea to have them inspected by a professional. Note that these parts are designed for high - performance applications, so make sure your engine can handle the high - stress operation. Avoid using them in engines that are not compatible with the high compression ratios or high - boost conditions they are built for.