Supertech Honda B20 Block B16 Head 84.5mm Bore +5.5cc Dome 12.5:1 CR Pistons - Set of 4 (Excl Rings)

What you get in this set are four forged pistons designed for a Honda B20 block when paired with a B16 cylinder head. These pistons have a bore size of 84.5mm and feature a dome volume of +5.5cc, which helps achieve a 12.5:1 compression ratio. This specific compression ratio is a notable increase over stock, aimed at improving performance for naturally aspirated or boosted applications.

These pistons are forged from high-strength aluminum, a material chosen for its durability and lighter weight compared to cast alternatives. The forged construction means they can withstand higher cylinder pressures and temperatures, making them a solid choice for builds that push the limits of the stock engine. The dome shape is precisely calculated to work with the combustion chamber volume of a B16 head on a B20 block, optimizing the burn and power output. Keep in mind that this set does not include piston rings, which will need to be purchased separately to complete the assembly.

When installing these pistons, ensure you are using a reputable engine builder or mechanic familiar with performance engine assembly. Proper balancing of rotating assembly components is crucial for longevity, especially with a higher compression ratio. This set is intended for performance builds and requires careful attention to detail during installation to achieve the desired results and reliability.