Supertech Mazda MX5 2.0L 83.5mm Bore STD Dome 13:1 CR 4032 Forged Pistons - Set of 4 (Excl Rings)

Supertech is well-known for making solid engine components, and these 4032 forged pistons for the Mazda MX5 2.0L are a prime example of their work. If you're rebuilding the engine in your Miata and looking to increase compression for better performance, this set is designed to help you achieve that goal. They feature a standard dome shape and are sized for an 83.5mm bore, which is the stock size for many 2.0L MX5 engines, making them a direct replacement for your original pistons when you're going through the engine. The 13:1 compression ratio is a notable bump over stock, giving you more power and responsiveness.

These pistons are forged from 4032 aluminum alloy, a material chosen for its strength and durability under high temperatures and pressures. Unlike cast pistons, forged pistons are shaped from a solid block of aluminum, which aligns the grain structure of the metal for improved strength and resistance to cracking or deforming. This makes them a much better choice for engines that will see higher performance use or are being rebuilt with performance in mind. Keep in mind that this set includes the pistons only; you will need to source your own piston rings separately, as they are not included with this part number.

When installing these pistons, it's important to follow the manufacturer's recommended clearances and torque specifications to ensure proper function and longevity. Because these pistons are designed for a higher compression ratio, they are often paired with performance camshafts and an engine management tune to take full advantage of the improved airflow and combustion. Please note that these pistons are not CARB approved and cannot be shipped to California.