For Ford enthusiasts that are serious about performance! Just under the brass terminals of the MSD cap and rotor is an easy to adjust mechanical advance assembly. The assembly is fine blanked from chro-moly steel, TIG welded for strength plus receives a QPQ coating. The precision weights glide on nylon bushings for smooth advancement and different springs and stop bushings are supplied so a variety of advance curves can be tuned. The steel shaft that spins the advance and reluctor receives a friction reducing coating plus is guided by a sealed ball bearing and long sintered bushing. This combination provides stable timing signals and spark delivery at any rpm. Triggering chores are handled by MSD's race proven, maintenance-free magnetic pick-up.