Fast Family: A WR400 from a father-and-son team

At its heart, motorcycling is a solitary pursuit. But it also brings people together, sharing their enthusiasm and skills when the hand is not on the throttle. We love stories about kindred souls working together, especially when they involve families—because too often, family anecdotes dwell on parents being unhappy with their offspring heading out on two wheels. That doesn’t apply to the German father-and-son team Michael and Allen Posenauer, who are based in Offenbach and run AMP Motorcycles. They’ve just finished this very cool Yamaha WR400 F Enduro conversion, and their enthusiasm is infectious. “We’re doing this as a hobby—as...