The Supertech piston set for Mazda Miata 1.8L engines includes four forged pistons sized to an 83.5mm bore with a 2.5cc dome producing a 9.5:1 compression ratio; rings are excluded. Made to the specified bore and crown volume for the 1.8L Miata, this set supports rebuilds or maintenance where restoring or achieving that compression ratio and piston geometry is needed.
Supertech Mazda Miata 1.8L 83.5mm Bore 2.5cc Dome 9.5:1 CR Pistons - Set of 4 (Excl Rings)