High-end custom motorcycles are often criticized for favoring form over function, but Kengo Kimura rides that line masterfully. As Heiwa Motorcycle, he’s racked up numerous awards?including multiple wins at the prestigious Mooneyes show. But he’s also fond of building real-world beaters like this sassy little Suzuki scrambler.
Simply dubbed ‘GrassTracker No0006,’ the bike was commissioned by a client, and follows a template that Kimura-san has developed over the last few years. It’s based on the humble 2000-model Suzuki TU250 Grasstracker Big Boy?a 250 cc single-cylinder commuter with classic charm.

Kengo typically picks either the TU250, or its variant, the ST250, for these scrambler projects, because they tick a lot of boxes. They’re uncomplicated machines with minimal bodywork, decent ground clearance and 19F/18R wheels that are perfectly suited for dual-purpose use. And since they only make 20 hp and weigh 273 lbs dry, brake and suspension upgrades are less of a priority. That’s why this Grasstracker’s running gear has mostly been left alone, save for a fresh set of Dunlop D603 tires. Kengo’s focus here was on trimming the petite single down even more, refining its looks, and making it more fun to ride.

Kengo started by ditching the Suzuki’s stock trimmings, replacing them with a clever mix of modified and one-off parts. The aluminum fuel tank’s actually from a vintage motorcrosser; more specificall...