Retro superbike: Kawasaki Z1 by AC Sanctuary

Many of the most successful motorcycle builders—the ones running a solid, profitable business—hit on a formula. It’s usually a combination of looks, components and fabrication that works well, and can be endlessly tweaked. That’s the approach taken by AC Sanctuary, one of Japan’s most renowned builders. Their bikes are a masterclass in proportion, stance and performance. And although they’re expensive, a lot of people are prepared to pay the price. The AC Sanctuary ‘Real Complete Machine’ concept strips a 70s muscle bike back to its component parts. It effectively gives you a ‘new’ motorcycle, as highly finished as one you’d...