The new Kawasaki Z900RS had barely broken cover when custom examples started popping up. First Kawasaki Japan commissioned three builds from local workshops, then Kawasaki Australia handed one over to veterans Deus.
But there’s one name that’s curiously missing from the list: AC Sanctuary. The enigmatic Japanese powerhouse has proven time and time again that if anyone knows how to restomod a vintage Zed, it’s them.

If we had a direct line to Kawasaki Motors, we’d tell them to get a bike over to AC Sanctuary, pronto. And we’d use this show-stopping 1970s Kawasaki Z1 to plead our case.
Numbered RCM-431, it was built for a client in Tochigi Prefecture, north of Tokyo. He already owns a newer Zephyr 1100, so the AC crew knew that they’d need to step up the older Zed’s performance to match. Luckily ‘RCM’ stands for ‘Real Complete Machine’?so this Kawa’s had every upgrade imaginable thrown at it.
One of the client’s top requests was that Sanctuary install a frame-mounted bikini fairing from American Dream. But he also wanted a more comfortable position than clip-ons would provide, so the guys had to mount the fairing high enough to interface with a pair of low-rise handlebars.
Everything now fits with millimeter precision, with rubber mounts added to dampen fairing vibration at speed. The bars are superbike items from POSH Japan, and there’s a digital speedo tucked behind the new screen. ...