Supertech Honda B20 Block B16 Head 84mm Bore +5.5cc Dome 12.5:1 CR Pistons - Set of 4 (Excl Rings)

This set includes four Supertech forged pistons designed to work with a Honda B20 block and B16 cylinder head. Each piston features an 84mm bore and a +5.5cc dome, resulting in a 12.5:1 compression ratio when paired with the appropriate B16 head. These pistons are built for performance applications where increased compression is desired to extract more power from your engine. They are forged from high-strength aluminum alloy, a common practice for performance pistons because it offers a good balance of strength and weight, crucial for handling the stresses of higher compression and potential performance tuning.

The 84mm bore size is a key specification, indicating these pistons are intended for an engine build that has been bored out to this dimension. This larger bore, combined with the dome shape and the 12.5:1 compression ratio, is designed to increase the engine's thermal efficiency and power output. It's important to note that these pistons do not include piston rings; you will need to source those separately to complete the assembly. Proper installation and matching with compatible engine components, such as the correct crankshaft, connecting rods, and cylinder head, are critical for optimal performance and engine longevity.

When building an engine with these pistons, consider the fuel requirements. A 12.5:1 compression ratio typically requires premium fuel or race gas to prevent detonation or knocking. Also, ensure your engine management system is tuned to take advantage of the increased compression. These pistons are a solid option for enthusiasts looking to build a high-compression naturally aspirated or forced induction engine for their Honda B-series application.