ACCEL HP Spark Plugs are made with a Copper core which is a better conductor than Platinum and Iridium. They deliver a stronger spark especially in high performance applications where high combustion pressures are present. Copper is much better at dissipating heat than other materials which lessens the chance of a misfire.

These ACCEL performance spark plugs produce a larger spark for more power at high rpms. They improve throttle response and fuel economy and reduce fouling. Their purified Alumina insulator prevents arcing, and their machine-rolled threads protect heads. The double platinum electrode ensures a long life

MSD Spark Plugs are durable enough to withstand the rigors of performance operation using high output ignitions

ACCEL Motorcycle Spark Plugs are available in Copper Core and Platinum versions for popular applications

Spark Plug Accessories