JE Pistons 345821S FSR Forged Piston Single 2618 Aluminum 3.386 Bore 1.261 CH 0.945 Pin

The JE Pistons 345821S is a single forged FSR piston engineered for the GM/Cadillac 2.0L Turbocharged ECOTEC LTG engine. Featuring a 3.386-inch (86.00 mm) bore, 1.261-inch compression height (CH), and a 0.945-inch wrist pin diameter, this piston is built from 2618 T6 high-tensile forged aluminum — the material of choice for high-demand forced induction and performance applications.

Designed with JE's proprietary Forged Side Relief (FSR) forging technology, this piston delivers reduced skirt width and a shorter wrist pin to minimize friction, reduce power loss, and save rotating mass. The dome crown features smooth flowing radii for optimized flame travel and combustion efficiency. The piston skirt is coated to reduce friction and wear against cylinder walls while also lowering operating noise.

Key Features:

• 2618 T6 Forged Aluminum — high tensile strength ideal for boosted, nitrous, and extreme-duty applications
• Proprietary FSR Forging Design — reduced skirt width and shorter wrist pin minimize friction and parasitic power loss
• Dome Crown with Smooth Radii — promotes excellent flame travel for consistent combustion
• Advanced Skirt Coating — reduces friction and wear on skirts and cylinder walls; lowers operating noise
• Accumulator Groove (application dependent) — reduces combustion gas pressure, limits ring flutter, and improves ring seal for consistent power
• Offset Wrist Pin — reduces piston slap for quieter operation
• 100% Engineered, Forged, and Machined in the USA
• Bore: 3.386 in. (86.00 mm)
• Compression Height (CH): 1.261 in.
• Wrist Pin Diameter: 0.945 in.
• Compression Ratio: 9.50:1
• Piston Volume: -1.30 cc
• Alloy: 2618

Each piston is sold individually, allowing builders to source exact quantities needed for custom engine builds. This is part of JE Pistons' standard piston lineup, backed by over 75 years of racing and performance piston expertise.