JE Pistons 315164S FSR Forged Piston - Set

The JE Pistons 315164S is a precision-engineered forged piston set built using JE's proven Forged Side Relief (FSR) forging process. Forged from high-tensile 2618 aluminum alloy and machined to exacting tolerances in JE's USA-based CNC manufacturing facility, this piston set delivers the strength and reliability demanded by serious performance engine builders.

Key Features:

• 2618 Aluminum Alloy Construction — High-tensile forging alloy engineered for extreme heat cycles, high boost, and forced induction environments
• FSR Forging Design — Forged Side Relief technology reduces skirt width to minimize friction and parasitic power loss while saving weight
• CNC-Machined Precision — Each piston is machined to tight tolerances for consistent bore fit, optimized ring seal, and reliable compression
• Valve Relief Machining — Precision-placed valve reliefs engineered for compatibility with performance camshafts and larger aftermarket valves
• Racing-Proven Platform — JE's manufacturing experience spans NASCAR, IndyCar, NHRA, and professional motorsport applications
• USA Manufactured — Engineered, forged, and machined 100% in the United States

JE Pistons has been a benchmark manufacturer in the forged piston industry for over 75 years, supplying professional racing teams and high-performance engine builders worldwide. The 315164S piston set brings that same racing heritage to your performance build.