The Speedmaster%u00AA high output technology coil produces up to 70% more spark energy than stock coils with outstanding reliability. This unit is recommended for street, strip, circle track and drag racing. Internally the coil also has large gauge wire windings for maximum spark current and voltage with better heat dissipation at high rpm. High voltage arcing is minimized through screw on connectors and a high tension tower. Ideal for use with capacitive discharge (CD) ignition systems and all of SpeedmasterTM range of High Output Ignitions.