This 124 cubic inch engine is designed with touring, and or bagger riders in mind.
Starting with the proven 120 engine as the basis, the 124 cid was accomplished by
increasing the stroke from 4.25” to 4.375”. This insures the rider of at least 100 ft. lbs. of torque
above 2000 RPM for passing situations. The camshaft was changed to lower the peak torque
RPM and to spread out the torque curve. At the same time the camshaft ramps were designed
to provide quiet, easy on the valve train longevity.
The compression ratio was dropped slightly to allow for the occasional bad tank of fuel without
causing major engine damage. This slight drop in compression also has the effect of smoothing
out the firing impulses for an even smoother ride. Couple these improvements to pistons made
from time proven 2618 alloy and you have a very quiet, powerful, and long lasting engine for
your riding pleasure.