Kawasaki GPZ900R Restomod – BikeBound

AC Sanctuary offers an unique Ninja the Sort-R therapy… 

Launched in late 1983, the Kawasaki GPZ900R — aka the Ninja ZX900 — was the earliest member of the Ninja sequence, and it modified sport biking eternally. Whereas a liquid-cooled 16-valve inline 4 making 115 hp may not sound that spectacular at this time, the bike was an excellent leap ahead for the trade.

“It was the primary real 150mph superbike, dominated the 1984 Isle of Man TT races, and set the usual for full-bore sportsbikes for the subsequent decade.” –Bemoto

Technical improvements included a brand new “diamond” body that used the engine as a confused member, a 16-inch entrance wheel derived from the corporate’s race bikes, an anti-dive fork with air-assisted springs, and that one-year-only purple and charcoal paint scheme that also seems to be red-hot at this time.

Kawasaki had none apart from Wayne Rainey on website at Laguna Seca for the press launch, and the president of Kawasaki Heavy Industries was current as effectively. Clearly, the corporate knew historical past was within the making.

Apparently, the “Ninja” identify got here from Kawasaki USA’s advertising and marketing director, Mike Vaughn, who’d lived in Asia and named his 22-foot Colombia sailboat Ninja. It could be a branding coup and the right identify for a motorbike that stole the thunder proper out from beneath Suzuki’s Katana.

After all, the US-spec model famously turned up as Maverick’s sports activities bike of alternative in Prime Gun, furthering the legend of the unique Ninja.

Although the GPZ900R was a masterpiece of its day, sport biking expertise has come a good distance within the final 40 years since its inception. That’s the place Japanese grasp Hiroyuki Nakamura of AC Sanctuary is available in. Nakamura-san is world famend for his potential to protect and sharpen the old-school character and elegance of classic superbikes whereas bringing their efficiency straight into the twenty first century.

Although he’s finest identified for his air-cooled builds, Nakamura does tackle barely extra trendy liquid-cooled tasks just like the one you see right here.

“The proprietor, who’s been using a GPZ900R for a while, has come to our store many occasions for personalisation and repairs. We’ve had a want to transform the bike to an RCM from the start, and now we’ve applied the plan.”

RCM stands for “Radical Customized Manufacture” — the model that homes AC Sanctuary’s highest-level restomod builds. When the crew dug into the donor bike’s engine, they realized the internals had some points. On the plus aspect, that was the right excuse for a full, no-compromises “Sort-R” Sports activities Bundle.

The motor was fully reconditioned in and out with a rebalanced crank, honed and bored cylinders (972cc), and in depth head work. Inner elements just like the piston pins and cams got a DLC (Diamond Like Coating) therapy, whereas the rocker arms and piston rings obtained a WPC (micro ball-peening) therapy to cut back friction and put on.

The engine was outfitted with Wiseco pistons, Yoshimura cams, Nitro Racing oil-cooler package, Mikuni TMR-MJN38 carbs, and a Nitro Racing hand-bent titanium exhaust with Grenade V-3 silencer — trick!

The bike is now rolling on 17-inch OZ Racing Wheels — a GASS 3.50-17 in entrance and PIEGA 5.50-17 within the rear, matched with a Sculpture swingarm, widened chainline (95mm → 103mm), and Pirelli Diablo rubber. Öhlins suspension and Brembo brakes spherical out the undercarriage.

Different highlights embrace Nitro Racing rearsets and fenders, Okushin paintwork, and a cockpit stuffed with Defi gauges.

Nakamura says these early Ninjas was moderately priced, however like many of the air-cooled superbikes earlier than them, they’ve turn into an increasing number of costly through the years. For AC Sanctuary, the growing rarity and costly of donor machines is of utmost concern. On this case, it was good to remake a motorbike the shopper already owned.

This must be the most popular Ninja 900R we’ve seen — a motorbike which may truly outrun the F-14 Tomcat that Maverick races within the unique Prime Gun, hunched low on his personal 900R!

Observe the Builder

Web site: www.ac-sanctuary.co.jp
Fb: www.fb.com/ac.sanctuary

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