Miguel Castro seems to be working his way through a checklist of custom motorcycle styles. His first build was a cafe racer, but then he moved onto his second: this cheeky Honda CB350 street scrambler.
Based in California, Miguel holds down a day job as a creative director at a major ad agency, and tinkers on bikes after hours. He grew up learning how to wrench from his father, who restored Jaguars for a living. Working under the handle Dia de los Motos, he does just about all the work on his builds himself, barring a few specialist tasks.

Miguel sourced the 1970-model Honda CB350 donor for this project locally. It wasn’t running, but it was a complete bike and had been living in a garage?so at least it wasn’t a total wreck. He tore it down to its bare bones and started conceptualizing. ?My inspiration really came from all the bikes I saw one time at the One Moto Show,? says Miguel. ?It really got me wanting to do something completely different than the typical CB350 cafe racers you see. I wanted to bring a bit more of a modern look to this period of bike.?

Miguel’s first step was to rebuild the Honda’s seized motor, with oversized pistons and rings from Wiseco. The cylinder and head work was outsourced, but he handled the rest of the rebuild himself. The new setup includes an upgraded cam tensioner and a Pamco electronic ignition.
The carbs are a pair of Mikuni VM30s, breathing through foam pod filters from Uni Filter. Miguel welded up a set o...