85.5mm Bore 1400HD Pistons

Wiseco 1400HD E85 Series Pistons are high-performance forged pistons specifically designed for Mitsubishi EVO 4G63 Evo 4-9 engines. These pistons are engineered, forged, and machined in the U.S. using 2618 aerospace alloy for superior strength and durability. They feature a 85.50 mm bore diameter, a -4.50cc dish type piston volume, and a 10.6:1 compression ratio, making them suitable for demanding applications. Key technical specifications include a 35.00 mm compression height, 1.0 mm top ring thickness, 1.2 mm second ring thickness, and 2.8 mm oil ring thickness. The pistons come with a 22mm (0.866 inch) wrist pin made from 9310 material, utilizing a floating wrist pin style. They are also equipped with ArmorGlide skirt coating to reduce friction and wear. This kit includes a complete set of four pistons with pins and rings, designed for a crankshaft stroke of 88mm and a rod length of 150mm. Benefits include improved engine reliability and performance for high-stress environments. These pistons are a direct fit for the specified Mitsubishi Eclipse and Eagle Talon models, ensuring a precise and secure installation. The design prioritizes strength and heat resistance, crucial for turbocharged applications and those running on E85 fuel. No special tools are typically required beyond standard engine building equipment, but professional installation is recommended due to the precision involved in engine assembly. Ensure proper bore clearance and ring gap settings for optimal performance and longevity. The 1400HD series is a robust choice for enthusiasts seeking to maximize their engine's potential with enhanced durability and power output.