JE Pistons 379448 FSR Ultra Series Piston Kit Bore Compression - 92mm 9.5 1

The JE Pistons 379448 is an FSR Ultra Series piston kit featuring a standard bore of 92.00mm with 9.5:1 compression ratio, specifically designed for high-performance UTV applications. Machined from 2618-T6 high tensile forged aluminum, this kit features smooth flowing radii that require no deburring or preparation.

Advanced Performance Technologies:

• Aligned Grain Flow Technology directs aluminum grain flow around critical piston areas for increased strength
• Lateral gas ports channel combustion gases behind the top ring groove for improved ring seal in boosted applications
• Ultra-thick ring lands maintain ring stability in forced induction and high-horsepower engines
• Thermal Barrier Crown Coating reduces heat transfer, decreasing fatigue and improving longevity
• Tuff Skirt coating reduces operating friction for better wear resistance
• Accumulator groove traps unwanted gases below the top ring to maintain ring seal
• Double pin oilers with upgraded 9310 wrist pins provide superior lubrication and withstand forced induction loads

Sold as a complete kit with all necessary pistons, rings, wrist pins and wire locks under one part number. Made in the U.S.A.