Upgrade your Mitsubishi engine with the Manley Performance 87mm +.5mm oversized bore piston, designed specifically for models from 1995 to 1999 with 4G64 and 4G63 cylinder heads. Crafted from high-strength 2618 alloy forgings, these pistons deliver exceptional durability and performance for both street and racing applications. The signature Platinum Series features proven cam and barrel skirt profiles that optimize power output while minimizing wear on cylinder walls, ensuring long-lasting engine integrity. Moly-coated skirt surfaces further reduce friction and improve ring seal, contributing to increased horsepower and efficiency.
The pistons are equipped with premium Chrome Moly wrist pins as standard, with optional upgrades to 9310 or Turbo Tuff/DLC alloys available for enhanced durability under extreme conditions. Unique fixturing technology allows for precise skirt turning and ring groove machining in a single operation, guaranteeing perfect ring land and groove squareness for optimal sealing and power transfer. The carefully engineered cam and barrel profiles work synergistically to generate substantial torque without compromising the cylinder wall integrity, making these pistons suitable for high-performance builds.
Designed to fit a variety of Mitsubishi models including Galant, Montero Sport, and Mighty Max, the Manley Platinum Series pistons are ideal for tuners and professional engine builders seeking reliable, high-quality components. Please note that these pistons are not compatible with California-style carburetors and require carburetor acknowledgment during installation. Engineered in the USA, these pistons meet strict standards for performance and durability, making them a trusted choice for demanding automotive enthusiasts.
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