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Kawasaki ZX-6RR

The 2005 NINJA® ZX-6RR sport motorcycle is the racing-homologated sibling of the all-new NINJA ZX-6R. Produced in limited numbers, it is designed for serious on-track performance, strongly reaffirming Kawasaki’s commitment to developing the world’s leading-edge sportbikes.
The NINJA ZX-6RR features all-new, 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 new engine.

Leading-Edge Style

Along with the ZX-6R, the NINJA ZX-6RR 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, as well as an aerodynamic ZX-10R-style front fender for a strong NINJA family resemblance.

From the cockpit, the NINJA ZX-6RR 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-6RR a slim, racy look.

Exhilarating Power and Performance

No sportbike can garner mass approval on good looks alone, and here again, the NINJA ZX-6RR 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-6RR 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.

The 599cc engine also features revised and polished intake ports, new combustion chambers and larger exhaust valves for improved on-track performance.

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-6RR features a more durable, smoother-shifting six-speed transmission, and the ratios are similar to those of the 2004 racing kit transmission. It also utilizes a multi-disc wet clutch with a back-torque limiter. Designed to maximize on-track performance, the back-torque limiter 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-6RR improved cornering performance and high-speed stability. The chassis also includes a steering damper boss on the left frame rail.

The fully adjustable Showa fork delivers outstanding cornering performance and includes TiSiCN coating on the inner tubes to reduce stiction. At the rear, new UNI-TRAK® linkage ratios provide more linear action and the rear shock has a revised damping valve to provide a wider range of racing settings.

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-6RR has the added benefit of low-expansion brake hoses for improved brake feel.

For exceptional cornering performance, the NINJA ZX-6RR rides on light, six-spoke wheels shod with 120/65ZR17 front and 180/55ZR17 rear tires.

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-6RR’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.

Features and Benefits

- Designed for #1 performance on the circuit and winding roads
- Polished intake ports, revised porting, new combustion chambers and larger exhaust valves, plus new racing cams, all contribute to increased performance

- Power boosting features includes oval-shaped sub-throttles fed by dual injectors

- Exhaust valve integral with the under-seat muffler improves low- and mid-range engine performance

- Improved aerodynamics give this middle-weight SuperSport the best CdA of any NINJA design to date

- Back torque limiter is standard

- New frame and swingarm with revised chassis dimensions improve cornering performance

- 300mm petal-style front disc brakes with radial-mount calipers and direct-action brake master cylinder provide excellent performance and feel

- Revised riding position based on the ZX-10R lets the rider take advantage of the awesome performance

- To suit non-modified stock racing classes, the six-speed transmission features close ratios similar to those of the 2004 racing kit transmission

- Inner fork tubes feature a TiSiCN coating to reduce stiction and improve suspension action

- Revised damping valve for the rear shock offers a wider range of settings for racing

- Steering damper boss provided on the left frame rail

- Low-expansion front brake hoses improve brake feel