The Supertech pistons for a Honda B20 block with a B16 head are supplied as a set of four sized to an 85mm bore with a +5.5cc dome producing a 12.5:1 compression ratio. Supplied without rings, these pistons restore the increased dome volume and correct bore sizing required for rebuilds or swaps, matching the stated compression and combustion geometry for that B20/B16 application.
Supertech Honda B20 Block B16 Head 85mm Bore +5.5cc Dome 12.5:1 CR Pistons - Set of 4 (Excl Rings)