JE Pistons Subaru EJ257 Block with EJ20 Head 99.5mm Bore Piston Kit

Description

Upgrade your Subaru EJ engine with the JE Pistons EJ257 block and EJ20 head piston kit, designed for high-performance applications. Crafted from high-strength 2618 aluminum, these forged pistons are engineered for durability and optimized performance. The kit includes four pistons with a 99.5mm bore, an inverted dome/dish design, and a compression ratio of 8.50:1, making them ideal for turbocharged or high-demand racing setups. Each piston features a proprietary Forged Side Relief (FSR) forging design, which minimizes friction and power loss by reducing skirt width and decreasing weight with a shorter wrist pin. This design enhances engine responsiveness and efficiency, especially under high-stress conditions. The accumulator groove, depending on application, helps decrease pressure from combustion gases, reducing ring flutter and improving ring seal for consistent power delivery. Additionally, the pistons come with a skirt coating that reduces friction and wear on both piston skirts and cylinder walls, while also lowering operating noise, contributing to smoother engine operation. Fully manufactured in the USA, these pistons are precision machined and include high-quality wrist pins, locks, and JE Pro Seal premium piston rings, ensuring a complete and reliable upgrade. Designed specifically for each engine and application, JE Pistons provide an optimal balance of strength, durability, and performance, making them a trusted choice for racing and high-performance street builds. Please note that this product requires acknowledgment of Prop 65 and is not CARB approved, emphasizing its suitability for off-road or racing use only. Proper installation and compatibility checks are recommended to maximize performance benefits from this premium piston kit.

Features:

• Proprietary Forged Side Relief (FSR) forging design minimizes friction and power loss with reduced skirt width and shorter wrist pin

• Accumulator groove helps reduce pressure from combustion gases, decreasing ring flutter and improving ring seal

• Skirt coating reduces friction and wear on piston skirts and cylinder walls while lowering operating noise

• Forged in the USA from high tensile strength 2618 aluminum for high-demand performance applications

• Engineered specifically for Subaru EJ257 engines with EJ20 heads for optimized performance and durability

• Includes high-quality wrist pins, locks, and JE Pro Seal premium piston rings for reliable operation

• Designed for racing and high-performance street applications, ensuring strength and longevity