American Prime Mechanical Advancer for Harley-Davidson Big Twins & Sportsters

The base is made of stainless steel so it won't rust. The weights are completely saturated with a specially formulated polymer coating that protects it from heat saturation, reduces friction, strengthens the component and makes it more efficient. The kit includes the center bolt. The Comp Master™ advance unit was created to not only upgrade a points style ignition, but also to enhance well made electronic ignitions and to convert electronic advance ignitions back to the simplicity of a mechanical advance ignition.