Description

★ Features and Structure

Plugs for tuning engines with excellent ignition and acceleration. The Iridium series plugs are designed for tuning engines with high heat values. They are iridium plugs with excellent ignition and acceleration.

improved starting and acceleration
Technology developed in Formula 1TM and MotoGPTM is now available for you.
The Iri series plugs are high-performance, spread flame faster, and have less energy loss (extinguishing effect) than regular plugs.
*Formula 1 is a registered trademark of FOA.

Increase engine power
The world’s top teams use NGK spark plugs.
Their track record speaks for itself.
With excellent discharge properties and powerful, fast combustion, they bring out the full potential of your engine.

Powerful Sparks
The ultra-fine diameter iridium alloy center electrode improves the electric field strength, producing a stronger spark at a lower voltage.

Stable combustion
Sparks are concentrated at the center electrode’s tip, resulting in constant stable combustion and improved fuel economy.