Forged Aluminum Pistons 99.50mm Bore 8.5:1 Compression Set

A crucial feature is the anti-friction coating, which helps to reduce wear and improve efficiency under stress. These pistons feature a 99.5mm standard bore size and a compression ratio of 8.5:1, making them suitable for modified Subaru WRX (2006-2014) and STi (2004-2021) models. Each set is supplied complete with all necessary hardware, including piston rings, clips, and wrist pins, ensuring a comprehensive solution for your engine build. This attention to detail simplifies the installation process for mechanics and performance enthusiasts alike. These pistons are ideal for those aiming to significantly increase their vehicle's power output, whether for track use, drag racing, or spirited street driving. The forged construction provides superior strength and durability compared to cast pistons, offering greater reliability when pushing an engine to its limits.