Maximize your Subaru EJ Series engine's potential with the JE Pistons Ultra Series Piston Kit. Designed specifically for high-performance and racing environments, this piston set includes four 2618 alloy inverted dome/dish pistons with a bore size of 3.937 inches and a compression ratio of 8.50:1. This premium kit comes with gas-nitrided carbon steel rings and thick-wall wrist pins, ensuring durability and optimal performance. The unique forging technology combined with exceptional features like lateral gas ports and a thermal barrier crown coating enhances strength and efficiency, allowing for increased horsepower and reliability under extreme conditions. Enjoy smooth operations and reduced friction, thanks to a specialized skirt coating, making these pistons an essential upgrade for any serious Subaru enthusiast. Whether you're a seasoned mechanic or a passionate DIYer, JE Pistons provide a reliable and effective solution to meet your power needs. Compatible with various model years of Subaru EJ Series engines, this piston kit is an uncompromising choice for those seeking to improve their vehicle's performance and engine life. Embrace the advantages of advanced engineering and American craftsmanship tailored for the rigors of sport compact racing and high-performance driving.

• Optimized for high-horsepower racing engines
• Unique Aligned Grain Flow Technology for superior strength
• Thermal Barrier Crown Coating reduces crown temperatures
• Thick-wall wrist pins meet high-performance demands
• Lateral gas ports ensure efficient ring seal and power
• Skirt coating decreases friction and wear
• Compatible with Subaru EJ257 STI

Part Number:	361327
Bore Diameter:	99.52 mm
Engine:	Subaru EJ SERIES
Compression Ratio:	8.50:	1
Piston Material:	2618
Piston Head Type:	Inverted Dome/Dish
Piston Pin Length:	2.250 inches
Ringset Included:	Yes
Piston Pin Wall Thickness:	0.210 inches
Manufactured in:	USA