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The Supertech piston set for Mazda Miata 1.8L engines includes four forged pistons sized to an 83.5mm bore with a −4cc dish yielding an 8.6:1 compression ratio; rings are excluded. Produced to match 1.8L Miata cylinder dimensions, this set provides the specified crown volume for rebuilds or engine refreshes where lower compression is required for a given setup.
Supertech Mazda Miata 1.8L 83.5mm Bore -4cc Dish 8.6:1 CR Pistons - Set of 4 (Excl Rings)
