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Tuesday 23 April 2024

American Prime Manufacturing

APM - 'Back to The Future'

Described by American Prime Manufacturing's President Ben Kudon as being "so close to the original it's scary," these high-quality black reproduction springer front ends feature chrome springs and fit OE 1936 - early 1946 EL and FL Harley-Davidsons and custom applications. 

They do not include the top tree, bearing cups or bearings, but as precision dimensioned reproductions, they do work with the original drum break and star hub and are now back in stock at APM's Santa Fe Springs, California factory.

Also seen here, and also back in stock with APM, this Mikuni HSR45 total carburetor kit fits Harley Big Twin Evo models from 1984-1999. Kudon points out that, of course, any parts or components that defeat the emissions control systems or cause emissions to exceed the standards on California pollution-controlled motor vehicles cannot be sold to customers in California or other states where similar laws may apply.

However, that does not change that fact that the HSR45 was a legendary bolt-on performance upgrade 'back in its day'. A slide-type, smoothbore carburetor equipped with a roller bearing two-piece slide for smooth and easy throttle pull, it was a 45 mm venturi redesign of the equally legendary HSR42 performance carb.

With the same reliable features as the '42,' the greater airflow allowed customizers to keep step with the increasing capacity of the highly modified engines that the EVO era spawned.