JE Pistons 317222S FSR Forged Piston - Set

The JE Pistons 317222S is a high-performance forged piston set engineered for sport compact and performance engine applications. Built to JE's exacting FSR (File-to-Fit) forged piston standards, this set delivers the strength, durability, and dimensional precision demanded by both serious street builds and competitive motorsport applications.

JE Pistons are manufactured from 2618 or 4032 forged aluminum alloy — the same materials trusted by professional engine builders worldwide. The forging process produces a denser, stronger grain structure compared to cast pistons, resulting in superior resistance to detonation, heat fatigue, and mechanical stress under high-boost or high-RPM conditions.

Key Features:

• FSR (File-to-Fit) forged piston design for precise bore fitment
• High-strength forged aluminum construction for maximum durability
• CNC-machined to tight tolerances for consistent ring seal and reduced blowby
• Low-friction skirt coating reduces wear and improves efficiency
• Designed for high-performance, forced induction, and naturally aspirated builds
• Includes full piston set (designated by "S" suffix)
• Compatible with standard JE rings and wrist pins (sold separately or included per kit configuration)

JE Pistons has been a trusted name in performance engine components for decades, supplying pistons to championship-winning teams in drag racing, road racing, and off-road competition. The 317222S continues that tradition with OEM-quality engineering at a performance-aftermarket level, making it an ideal upgrade for any high-output engine build.