JE Pistons Subaru EJ20 Stroker Ultra Series 8.5:1 – Set of 4 Pistons

Description

The JE Pistons Ultra Series for Subaru EJ20 engines offers a high-performance solution designed for enthusiasts seeking maximum strength and durability. Crafted with proprietary Aligned Grain Flow forging technology, these pistons deliver exceptional tensile strength to withstand the extreme cylinder pressures associated with high-boost and power-adder builds. Featuring a 3.64-inch bore and an 8.50:1 compression ratio, the Ultra Series pistons are engineered for reliable performance in demanding racing and street applications.
Each piston is equipped with a thermal barrier crown coating that reflects heat back into the combustion chamber, reducing crown temperatures and enhancing combustion efficiency. The skirt coating minimizes friction and wear on piston skirts and cylinder walls, promoting smoother operation and quieter cold starts.
The set includes high-strength Trend Performance wrist pins, manufactured in the USA, designed to handle high power levels without failure. Optimized pin oiling features ensure proper lubrication of the pin, reducing heat buildup, friction, and wear, which extends piston and engine life. Lateral gas ports are integrated to maintain optimal ring seal even at high RPM and boost levels, improving power output and engine efficiency.
Every feature on the JE Ultra Series pistons is tailored for high-horsepower racing engines, making them an ideal choice for turbocharged or supercharged builds. Made entirely in the USA, these pistons exemplify quality and precision engineering, ensuring dependable performance for your Subaru EJ20 engine upgrade.

Features:

• Aligned Grain Flow Technology: Maximizes tensile strength for high-performance engine environments

• Thermal Barrier Crown Coating: Reflects heat into the combustion chamber to reduce crown temperatures and improve scavenging

• High-Strength Wrist Pins: Thick-wall pins manufactured by Trend Performance for durability under high loads

• Skirt Coating: Reduces friction, wear, and operating noise during cold starts

• Optimized Pin Oiling: Ensures proper lubrication for reduced heat and wear

• Lateral Gas Ports: Maintains ring seal at high RPM and boost conditions

• Designed for Power: Engineered to support high-horsepower racing engine requirements

• Made in the USA: 100% manufactured domestically for quality assurance