Forged Piston Set, 10:1 Comp, 0.5mm Overbore

The Wiseco piston set is engineered for the Toyota 1ZZ engine, offering a significant upgrade for both street and race applications. This meticulous manufacturing process ensures tighter piston-to-cylinder clearances compared to other aftermarket options, effectively minimizing piston slap and reducing cylinder bore wear for improved engine longevity and performance. This piston set features a 10:1 compression ratio, which matches the stock ratio. This makes them a versatile choice suitable for naturally aspirated setups, nitrous-assisted engines, and applications utilizing low boost turbo or supercharger systems. Each set comes complete with four pistons, premium-grade piston rings, durable chromoly wrist pins, and necessary retainer rings, providing a comprehensive solution for engine builds. Installation of these 79.5mm pistons, which represent a 0.5mm overbore, requires professional machining. Specifically, the engine block must be bored and honed to accommodate the new pistons. Sleeves are not required for this installation. The use of these performance pistons is an excellent way to enhance the capabilities of your Toyota 1ZZ engine.