JE Pistons 314451R Forged Piston Single Bore CD Pin - 2618 3.661 1.209 0.905

The JE Pistons 314451R is a single replacement forged piston built from premium 2618 T6 high-tensile aluminum alloy, engineered for high-performance and forced-induction applications demanding maximum strength and thermal resilience. With a 3.661-inch (93.0mm) bore diameter, a 1.209-inch compression distance (CD), and a 0.905-inch wrist pin diameter, this piston is precision-machined to exacting tolerances for reliable, race-ready performance.

Key Features:

• 2618 T6 forged aluminum construction — the preferred alloy for boosted and high-heat racing environments, offering superior toughness over cast pistons
• Inverted dome/dish crown design — smooth, flowing radii optimize flame travel and combustion efficiency
• Proprietary Forged Side Relief (FSR) design — reduces skirt width to minimize friction and power loss while saving weight via a shorter wrist pin boss
• Ring pack: 1.2 x 1.5 x 3.0mm (top) and 1.0 x 1.2 x 2.8mm (second) — narrow rings reduce friction and improve ring seal
• 0.905-inch straight-wall carbon steel wrist pin included — with pin fitting and Tru Arc locks
• Skirt coating — reduces friction and wear on piston skirts and cylinder walls while lowering operating noise
• Accumulator groove — helps reduce combustion gas pressure behind the top ring, minimizing ring flutter and improving ring seal for consistent power output
• Engineered, forged, and machined 100% in the USA

JE Pistons brings over 75 years of forged piston expertise to every part they produce. Designed for specific engine and racing applications, the 314451R delivers the ultimate balance of strength, light weight, and dimensional precision required at the top levels of motorsports competition.