Supertech Mazda Miata 1.8L 84mm Bore -4cc 9:1 CR Pistons - Set of 4 (Rated 560HP/30PSI) (Excl Rings)

If you're rebuilding the engine in your Mazda Miata 1.8L and looking to handle more power, these Supertech forged pistons are a solid choice. This set is designed for an 84mm bore and features a -4cc dish, resulting in a 9:1 compression ratio. They are rated to handle up to 560 horsepower and 30 PSI of boost, making them suitable for modified or forced induction applications.

Forged pistons like these are built from stronger aluminum alloys than cast pistons, allowing them to withstand the higher pressures and temperatures found in performance or boosted engines. This improved strength helps prevent piston failure under demanding conditions. This set includes four pistons, but please note that the piston rings are sold separately and will need to be purchased in addition to this kit. The 9:1 compression ratio is a good balance for many turbo or supercharger setups, offering decent low-end response while still allowing for significant boost.

When installing these pistons, it's important to follow the manufacturer's recommended clearances and lubrication procedures. Because these are a performance part, they are not CARB approved and cannot be shipped to California. Always consult your engine builder or mechanic for specific installation advice and to ensure all necessary components, like the correct rings and gaskets, are accounted for in your build.