NGK Iridium Spark Plugs (price is for each plug)

90-05 MX5 Miata

  1.6 - 1.8 - 1.8 turbo - 1.8 Supercharged

We have found the NGK iridium to be the most consistent and  longest lasting spark plug. It's what we use in our street and race cars, including our endurance racers.

All forced induction engines  used for autocross, track or increased boost over OEM - Heat Range 7