Manley 03-06 Evo 8/9 4G63T 87.0mm +2.0mm Over Bore 10.0/10.5:1 Flat Top Pistons w/ Rings

The Manley Platinum Series pistons are crafted from domestic 2618 alloy forgings, ensuring superior strength and durability for demanding high-performance applications. These pistons feature advanced cam and barrel skirt profiles, engineered to optimize power output while minimizing wear on cylinder walls. Each set includes premium Chrome Moly wrist pins as standard, with options for upgrades to 9310 and Turbo Tuff/DLC alloys for enhanced durability in select SKUs. Manley adheres to stringent standards for piston ring lands and grooves, promoting an improved ring seal for increased power. The unique manufacturing process allows for skirt turning and ring groove machining in a single operation, guaranteeing precise ring groove to skirt squareness. This attention to detail in design and manufacturing makes Manley pistons a trusted choice for professional engine builders and tuners seeking top-tier performance and reliability.