The Supertech pistons for a Honda B20 block with a B16 head are supplied as a set of four machined to an 84.5mm bore with a +5.5cc dome producing a 12.5:1 compression ratio. Sold without rings, these pistons provide the increased dome volume and bore sizing needed to achieve the stated compression and combustion geometry for the B20 block with B16 head combination during rebuilds or swaps.
Supertech Honda B20 Block B16 Head 84.5mm Bore +5.5cc Dome 12.5:1 CR Pistons - Set of 4 (Excl Rings)