The Mach Chicken: A smokin' Kawasaki S1 tracker

Flat-trackers and two-strokes are some of our favorite things. Combine the two, and we're hooked. All the more if the two-stroke in question is the mythical Kawasaki S1—an air-cooled triple celebrated in its heyday for being a spirited ride. This 1975-model S1 belongs to Aaron Pierson, who's done a stellar job of transforming it into what he calls “The Mach Chicken.” Aaron hails from Lethbridge in Alberta, Canada, where he builds and tests turboprop engines for an aircraft engine manufacturer. His family used to run a Kawasaki shop, which is where he first came across his S1. “When I was...