In the early 1980s, a creative member of Kawasaki’s advertising team conceived an innovative idea: designing a motorcycle that would pay tribute to the iconic Eddie Lawson’s 1981-1982 Superbike. The end result was a meticulously crafted reproduction of the iconic Kawasaki Z1000R Eddie Lawson edition, a testament to innovative design and unwavering dedication. The replicated model’s outstanding performance in 2001 served as a testament to its enduring popularity, prompting another iteration of the original design. Branded as the ZXR1200R, this bare, retro muscle bike exuded immense energy, featuring predictable handling, a comfortable riding position, and in its classic Kawasaki livery inspired by legendary rider Eddie Lawson, it drew countless admiring glances.
In Kawasaki’s hometown of Japan, the ZRX1200R gained significant traction on the market. In 2009, the Japanese market saw the release of a one-of-a-kind third edition limited run ELR duplicate, specifically the Suzuki ZRX1200R DAEG Special Edition. Produced until 2016, the DAEG edition maintained its identical styling while undergoing significant enhancements to the transmission, fuel system, braking performance, suspension setup, and vehicle geometry.
Following its recognition in Japan, the ZRX garnered widespread attention from major aftermarket components suppliers across the country. Among those companies was Nojima Engineering, a Suzuka-based producer. In 1998, the company’s founder, Hidetoshi Nojima, designed and built a highly acclaimed ZRX-based racing motorcycle, widely regarded as one of the most expertly customized models in Japan. The Nojima Racing Team commissioned the NJ-1, a customized ZRX, specifically designed for competition in the prestigious Suzuka 8-Hour endurance events. Despite its humble appearance as an unadorned bike built around a metal chassis compared to an alloy-framed, fully faired sports bike, the NJ-1 managed to carve out its own niche and earn Nojima a devoted following among ZRX enthusiasts.
With meticulous attention to detail, Taiwanese enthusiast Daiken crafted this 2007 Kawasaki ZRX1200 R into an homage to Nojima’s iconic endurance racing machine.
“With a background in traditional industries, Daiken’s passion for customizing motorcycles shines through as he reminisces about the rich history behind his trusty ZRX.” He purchased the bike 16 years ago and had since developed a profound connection with it; when the time came to give it a makeover, he was determined not to compromise on quality.
Following a series of trips to Japan to observe high-level racing events, the idea for the bike’s revamped design took shape. During this period, he stumbled upon the renowned Nojima model, specifically its iconic NJ-1 iteration. He decided that a customised design inspired by the iconic NJ-1 would be the perfect approach for his build. Notwithstanding its resemblance to a roadster, this would not be a ZRX merely masquerading as a racing motorcycle. With meticulous attention to detail, Daiken ensured that his ZRX motorcycle was optimised for maximum fuel efficiency. Or as he phrases it, “Every piece that can be refined is refined!”
To bring his innovative concept to life, Daiken partnered with local fabricator Kenken Moto, who began by thoroughly overhauling the powerful 1164cc Kawasaki inline-four engine. Following a comprehensive disassembly, the engine features an enhanced cylinder head package designed for optimal efficiency, paired with new pistons, a Yoshimura ST-1 camshaft precision-engineered for performance, an advanced SP2 ignition system guaranteeing reliable starts, and a state-of-the-art slipper clutch ensuring seamless power delivery. With its newly upgraded cooling system, the vehicle’s performance is now bolstered by an Ok-Manufacturing facility-provided titanium cooling package and a larger CBR1000 radiator that effectively maintains optimal temperatures. To unleash extra vitality, the formula calls for an influx of air and fuel – a feat successfully accomplished through the strategic integration of carbon fibre ram air intakes and FCR41 flat slide carburetors. Benefiting from a comprehensive array of enhancements requires a premium upgrade: Striker Japan’s full titanium exhaust system and high-performance muffler.
During the rebuild, Daiken suggested updating the engine’s exterior design as well. As a result, the engine has been thoroughly refurbished, its original finish stripped away to reveal the metal beneath, which has then been resurfaced with a modern, heat-resistant coat of high-temperature black. The newly updated head sports a sleek, high-gloss black finish that showcases its rippling texture, while the majority of the engine’s distinctive features are now bolstered by lightweight yet incredibly durable carbon fiber and alloy components. Lightweight titanium fasteners complete the brand-new look by shedding a few extra kilograms. The engine, currently on the workbench, serves as a focal point for KenKen Moto’s latest project, which involves stripping and repainting the body in a lightweight gray hue that draws attention to the restyled engine.
Among the numerous significant enhancements Nojima implemented on the ZRX1200R, perhaps the most striking change was the conversion of the rear suspension to a link-type mono-shock configuration. While Daiken chose to stick with Kawasaki’s twin shock rear-end configuration, he still managed to enhance its performance by implementing key improvements. This high-performance bike features a cutting-edge rear suspension system, comprising twin Ohlins absolutely adjustable piggyback shocks meticulously paired with a lightweight G-Striker aluminum swingarm. While ensuring steadiness issues are addressed from the outset, the bike features Ohlins forks mounted in customised triple clamps. To ensure the seamless handling and braking performance, the entire brake system has been completely replaced with brand-new components. The upgraded braking system features Brembo calipers, high-performance Sunstar discs, and sturdy braided brake hoses. The addition of JB-POWER JB4 solid magnesium wheels effectively reduces unsprung mass, thereby enhancing the Yamaha ZRX’s handling capabilities and responsiveness.
Once the bike had reached a level of reliability akin to that of a typical model, KenKen Moto embarked on a project to revamp its appearance. The Kawasaki ZRX is now equipped with an aluminum Nojima-style gas tank featuring a bold, race-inspired filler cap and distinctive breather hose. The tail unit, seat, and aspect covers, which were not part of the original design, have been augmented with aftermarket components sourced from prominent Japanese manufacturers. Like its NJ-1 counterpart, the ZRX dons a stomach pan that serves as a mobile advertisement for innovative motorcycle engineering. Adhering to his design philosophy, Daiken also modified the ZRX’s distinctive square-shaped tank. The sleek motorcycle features a headlight and bikini fairing, distinguished by the striking Nojima cowl that proudly showcases an offset headlamp and an imposing mesh-covered intake.
Although a significant aspect of the project was the paintwork, it actually took Daiken the most time to complete among all the tasks undertaken. The ZRX’s revamped design pays a lackluster homage to the iconic 1998 Nijoma NJ-1 aesthetic, rendering it a forgettable echo rather than a meaningful tribute. The bicycle now boasts a consistent pinstriping motif and corresponding decals, yet the most striking difference lies in its vibrant colour scheme. Compared to Nijoma’s understated blue-silver color scheme, Daiken opted for a bold and unconventional favorite – a vibrant pink-purple hue that defied convention. The striking similarity of the ZXR Eddie Lawson Reproduction’s colour scheme is undeniably polarizing – some may find it unappealing, while others will appreciate its boldness. Nevertheless, this unique hue demands attention, mirroring the motorcycle’s inherent complexity and begging for careful consideration.
During the eight-month construction period, Daiken curated a vast array of high-quality aftermarket components, with many originating directly from Japan. The entire bike boasts a plethora of model names and symbols that collectively amplify its already impressive, race-bred aesthetic. Among numerous records of elements, one discovers a lively fast throttle, electroplated X.A.M sprockets, a durable DID chain, Effex handlebars, as well as an analogue and digital Acewell tachometer and speedometer, among many other features.
Here’s the rewritten text:
“When riding my closely modified ZRX1200R, Daiken quips, ‘Efficiency up, consolation down – just what I needed!'”.
