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Tuesday 13 April 2021

American Prime Manufacturing (APM)

APM Advance Unit Assembly for Pre-1979 Points Style Ignitions and Conversions

Santa Fe Springs, California based American Prime Manufacturing (APM) has this new 304 stainless steel base advance assembly with center post, pivot pins and weights coated with a specially formulated polymer that protects from heat saturation, reduces friction, and in most cases, strengthens the component to make it more efficient. 

The special CNC-coiled springs hold precision tolerances, controlling spring rates to within 5% of specification to provide the maximum advance and retard applicable to your motorcycle. They are manufactured from precision-drawn wire, then zinc-plated for corrosion protection, with post-baking for relieving of potential hydrogen embrittlement.
Although Harley introduced a form of electronic ignition on its models in late 1979, due to inherent problems with the design and construction, many people reverted back to points ignition because of its simplicity.
"Prior to 1979, all H-D models used points type ignition, and our Comp Master Advance Unit was created not only to upgrade points style ignitions, but also to enhance the early electronic ignitions and convert them back to points style."
The Comp Master Advance Unit fits all H-D models up to the introduction of Twin Cams; the kit includes the center bolt and is assembled in-house at the APM factory. Spring replacement kits and Advance Unit rebuild kits also available.