Like the ZX-10R, the NINJA ZX-6R is oriented toward serious sport riding and track performance. It features ultra-aerodynamic bodywork with Ram Air, GP-style swingarm, under-seat exhaust system, six-spoke wheels, petal-style disc brakes, inverted forks and a powerful engine that will leave riders itching to find their local twisty highways. Along with its racing-homologated sibling, the ZX-6RR, the new NINJA ZX -6R is the most aerodynamically efficient sportbike Kawasaki has ever created – even more streamlined than the leading-edge ZX-10R. Specifically, the new fairing helps to divide the air stream farther ahead of the bike; by moving the “bubble” of still air farther forward in the cockpit, the rider experiences less buffeting around the head and shoulders.
The point of convergence – where the divided air streams comes together behind the rider – is critical to aerodynamic efficiency, so Kawasaki engineers designed the tail section to smoothly blend the air together while minimizing turbulence. The result is quicker roll-on acceleration and higher top speeds at the race track, as well as enhanced rider comfort and control.
The new body work also includes a ZX-10R-style central Ram Air duct and a flush-surface LED tail light, which makes the ZX-6R more visible to drivers of other vehicles. It also features an aerodynamic ZX-10R-style front fender for a strong NINJA family resemblance.
From the cockpit, the NINJA ZX-6R rider will notice several more leading-edge features that put this bike at the forefront of design and performance. Foremost is the new split-seam fuel tank/airbox cover. The rear half is the actual fuel tank, designed to fit neatly between the frame spars and down behind the engine’s fuel injection system, while the front half covers a new, quick-access air box. By centralizing the fuel mass near the center of the bike, chassis responsiveness is enhanced – weight transfers from turn to turn are lighter, and the chassis is exceptionally stable under acceleration and braking.
The advanced split-seam design also enabled engineers to make the airbox larger, thus enhancing engine performance. It also makes filter access quick and easy. Plus, a depression in the top of the fuel tank enables the rider to tuck in for improved aerodynamics.
The final tribute to aerodynamic efficiency is the new under-seat muffler, which gives the NINJA ZX-6R a slim, racy look.
Exhilarating Power and Performance
No sportbike can garner mass approval on good looks alone, and here again, the NINJA ZX-6R sets new standards of performance for the middle-weight class. For that, the engine includes a new cylinder, new cylinder head, and 38mm oval-shaped sub-throttle valves fed by twin injectors and redesigned Ram Air.
The NINJA ZX-6R utilizes oval-shaped sub-throttle technology. Combined with the improved Ram Air design, the oval-shaped throttle bodies increase airflow without making the fuel delivery assembly wider – intake efficiency is improved nearly 20 percent while helping to maintain a slim chassis profile.
Larger intake and exhaust valves, revised cam profiles and an exhaust valve integrated with the muffler improves low and mid-range response of the 636cc engine.
Also, the engine control unit has more memory for controlling the exhaust valve and second set of fuel injectors. Plus, the radiator is 40mm taller and features more-tightly packed cores for increased cooling capacity.
The NINJA ZX-6R features a more durable, smoother-shifting six-speed transmission, and includes a taller third gear ratio. It also utilizes a back-torque limiting clutch, which helps to reduce rear-wheel hop that may occur when downshifting a high-rpm.
Chassis Features
The matte-black aluminum frame features a shortened the wheelbase and the swingarm pivot point has been moved forward. Combined with a longer, braced aluminum swingarm, the new chassis gives the NINJA ZX-6R improved cornering performance and high-speed stability.
The fully adjustable Showa fork delivers improved ride quality and outstanding cornering performance. At the rear, new UNI-TRAK® linkage ratios provide more linear action, and new shock settings improve ride quality and track performance.
Radial-mounted, four-piston front brake calipers deliver exceptional feel and performance; four independent brake pads are used – one for each piston – for more even wear and improved heat resistance. The 300mm petal-style front discs are 5.5mm thick for high heat capacity and the front brake master cylinder uses direct action for better rider feedback. Also, the caliper for the 220mm rear disc brake mounts directly to the swingarm, negating the need for an independent brake tie-rod.
The NINJA ZX-6R rides on light, six-spoke wheels shod with 120/65ZR17 front and 180/55ZR17 rear tires for exceptional cornering performance.
The Cockpit
The riding position is also based on the NINJA ZX-10R. By pulling back the steering head assembly, the distance between the handlebars and footpegs is reduced, which provides the rider with an idealized position for performance riding. Combined with the new frame, seat and fuel tank, the rider sits “in” the bike, rather than “on” it.
The NINJA ZX-6R’s racing-style instrument panel features a bar-type LCD tachometer, digital LCD speedometer, stopwatch-style lap timer and adjustable shift indicator lamp, which includes Off, Low and Bright settings. A digital temperature gauge, clock and tripmeter are also included.
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Ominous look and custom graphics contribute to this Ninja’s exciting personality
Engine Type: Four-stroke, liquid-cooled, DOHC, four valves per cylinder, inline-four
