These spark plugs are designed to optimize the way your mag fired HD starts. For long reach heads only. These make way more spark at low rpm(kick star speed) than most of the other options on the market. Comes as a pair
These spark plugs are designed to optimize the way your mag fired HD starts. For long reach heads only. These make way more spark at low rpm(kick star speed) than most of the other options on the market. Comes as a pair