Supertech Honda/Acura 84.00mm +5.5cc Dome 21mm Pin 4032 Forged Piston - Set of 4 (Excl Rings)

This set includes four Supertech 84.00mm forged pistons, each featuring a +5.5cc dome and a 21mm pin. These pistons are crafted from 4032 aluminum, a material known for its strength and durability, making them a solid choice for performance builds. They are designed to fit Honda and Acura engines that require this specific bore size and pin diameter. Remember, this set does not include piston rings, so you'll need to source those separately to complete your engine assembly.

The 4032 aluminum alloy offers a good balance of strength and thermal expansion properties, which is crucial for high-performance applications where temperatures can get intense. The forged construction means these pistons start as a solid block of aluminum that is heated and then pressed into shape, resulting in a much stronger and more resilient component than cast pistons. The +5.5cc dome shape is designed to influence the compression ratio and combustion chamber shape, which can be important for tuning your engine's performance characteristics. The 21mm pin size is a common specification for many performance Honda and Acura engines, ensuring a proper fit with compatible connecting rods.

When rebuilding or modifying your Honda or Acura engine, choosing the right pistons is a critical step. These Supertech pistons are a well-built option for those looking to enhance their engine's capabilities. It's important to note that these pistons are not CARB approved and cannot be shipped to California. Always refer to your engine's specific service manual for detailed installation procedures, torque specifications, and any other necessary components or clearances required for proper assembly.