The Nology ProFire high performance ignition coils feature the most impressive performance data. The application of all new technology makes these coils second to none. 

ProFire ignition coils are on the cutting edge of technology. In order to supply the energy needed for trouble free high performance and high rpm operation, they were especially designed to have the quickest rise time with substantial energy reserves. The available spark voltage is in excess of 45,000 volts over the entire rpm range, and spark energy is equally impressive. Despite their size, the energy storage capability and power reserves of ProFire are extra high. 

ProFire will deliver just the kind of spark you need for maximum performance for your Harley-Davidson, Triumph and other motorcycles and high-performance machines. 

If you're not using ProFire ignition coil, you're not going as fast as you could be.

For Harley Davidson Motorcycles with Dual-Fire Ignitions requiring 3 Ohm Rpri use the NOLOGY ProFire Ignition Coil PFC-30D HD P/N 152 051 350HD (one coil with 2 plug wires - 1 coil per bike)

For Harley Davidson Motorcycles with Single-Fire Ignitions  requiring 3 Ohm Rpri use the NOLOGY ProFire Ignition Coil PFC-30S HD P/N 152 051 300HD (one coil with 1 plug wire - 2 coils per bike)

NOLOGY ProFire ignition coils for Harley Davidson motorcycles can be used with following current limited electronic ignition systems requiring 3.0 Ohm Rpri:
Harley Davidson EVO, Screamin Eagle Evo, Dyna 2000, 2000i, Crane HI-4, HI-4E, Crane HI-4TC, V-Thunder & HyperFyre, Spyke Ignition, Compu-Fire Elite-1, RevTech Digital.

The coils cannot be used with Compu-Fire, Dyna S and Points Ignitions.