Upgrade your Honda or Acura B16/B17/B18 engine with the Supertech P4-H84-P5-4 forged piston set, designed for optimal performance and durability. These pistons are crafted from high-quality 4032 aluminum alloy, offering excellent strength and wear resistance for demanding driving conditions. The set includes four pistons with an 84.00mm diameter, a compression height of approximately 4.24 inches, and a dome volume of +5.5cc, enhancing combustion efficiency and power output. The pistons feature a 21mm wrist pin, ensuring a secure fit within the connecting rods and reliable operation under high-stress conditions. Designed specifically for 2.4L engines, these pistons are ideal for performance upgrades or rebuilding efforts, providing a significant boost in horsepower and torque. Please note that these pistons are not carb-approved and require carburetor acknowledgment during installation. Since they are not approved for emissions compliance, professional installation and tuning are recommended to achieve optimal results. Crafted to meet rigorous standards, these forged pistons ensure longevity and consistent performance, making them suitable for enthusiasts and professionals alike. Elevate your engine's performance with the Supertech forged piston set, engineered for precision and reliability in demanding automotive applications.