Supertech Mazda Miata 1.8L 85.5mm Bore 8.8cc Dome 11:1 CR Pistons - Set of 4 (Excl Rings)

Supertech is well-known for making solid engine components, and these forged pistons for the Mazda Miata 1.8L are a great example of their work. If you're rebuilding your engine and looking to increase compression for better performance, this set of four pistons is designed to help you achieve that. They feature an 85.5mm bore and a dome volume of 8.8cc, which works out to an 11:1 compression ratio when installed.

These pistons are forged from aluminum, a strong material that's also lightweight, making them a good choice for performance applications where reducing reciprocating mass is important. The 11:1 compression ratio is a notable bump over stock, which can lead to improved throttle response and a bit more power, especially when paired with appropriate tuning. Keep in mind that these pistons are sold as a set of four and do not include piston rings, so you'll need to source those separately. This is a common practice when building engines, allowing you to choose the exact ring set that best suits your build and intended use.

When planning your engine build, remember that increasing compression can also increase the demand on other engine components. It's always a good idea to consult with your machine shop or a trusted mechanic to ensure all supporting systems are up to the task. These pistons are intended for off-road use and are not CARB approved, meaning they cannot be shipped to California.