With punchy single-cylinder engines and an incredibly-stripped down and lightweight nature, dirt bikes and dual sports make for fantastic flat tracker platforms — as evidenced by the existence of series like the AFT GNC1 Singles Championship. And though the majority of these dirt bike-derived racers’ conversions primarily consist of a wheel and tire swap and suspension retune, when German custom bike builders, AMP Motorcycles recently decided to take on its first flat tracker build, the father and son duo opted to go all out, completely transforming a turn-of-the-millennium dirt bike into a decidedly competitive dirt oval racer.
The Offenbach-based customs outfit began the build with a second-year Yamaha WR400F, which AMP completely rid of its off-road style bodywork and running gear. In its place is a set of hand-worked 2mm aluminum bodywork: a traditional tracker tail with number boards; front number plate; and an old-school coffin-style tank, and a lowered and retuned fork for more tracker-oriented performance. The build also rides on a fast and left-friendly set of 19” spoked rims front and back, and sports a custom under-slung octagonal exhaust. To see more of the build, you can check out AMP Motorcycles’ Instagram page linked below.