Dooble platinum Spark Plug

● Platnium is used for both the center and ground electrodes.
● The structure reduce the voltage required for the positive discharges.
● The center electrode is made finer for improved ignitability.

Improved Acceleration

Unbeatable acceleration performance on the circuit.

With an ultra-fine, 0.4 mm diameter center electrode, IRIDIUM RACING plugs are the realization of superb ignition performance and reguired voltage at unparalleled levels. Misfires have been controlled and will allow you to have steadily high levels of response and increased acceleration.

Improved Horse Power

More power with an ideal combustion cycle.

Through superb ignitability and reguired voltage, non-firing and misfires under a variety of conditions has been greatly reduced. As a result, combustion conditions have improved dramatically, increasing enginen output.