Kawasaki Ninja ZX-6R
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|Manufacturer||Kawasaki Motorcycle & Engine Company|
|Parent company||Kawasaki Heavy Industries|
|Predecessor||Kawasaki Ninja 600 (ZZR600/ZX-6E)
Kawasaki Ninja 600R (GPZ600R/GPX600R)
|Engine||599–636 cc (36.6–38.8 cu in) inline-4|
|Bore / stroke||67.0 mm × 45.1 mm (3 in × 2 in)|
|Power||96.4 kW (129.3 hp) @ 13,500 rpm (claimed)
101 kW (135 hp) @ 13,500 rpm (with RAM)
|Torque||71 N·m (52 lbf·ft) @ 11,500 rpm (claimed)|
|Suspension||Front: 41mm inverted Showa BP-SFF fork with top-out springs
Rear: Bottom-link Uni-Trak with gas-charged shock, top-out spring and pillow ball upper mount
|Brakes||Front: Dual 310mm petal rotors with dual radial-mount, Nissin four-piston, monobloc calipers
Rear: Single 220mm petal rotor with single-piston caliper
|Tires||Front: 120/70 ZR 17
Rear: 180/55 ZR 17
|Rake, trail||23.5°, 101 mm (4 in)|
|Wheelbase||1,394.46 mm (55 in)|
|Dimensions||L: 2,085 mm (82 in)
W: 705 mm (28 in)
H: 1,115 mm (44 in)
|Seat height||830 mm (33 in)|
|Weight||192 kg (423 lb) (claimed) (dry)
|Fuel capacity||17 L (3.7 imp gal; 4.5 US gal)|
|Fuel consumption||5.3 L/100 km (53 mpg-imp; 44 mpg-US)|
|Related||Kawasaki Ninja ZX-9R
Kawasaki Ninja ZX-10R
The Kawasaki Ninja ZX-6R is a 600 cc class motorcycle in the Ninja sport bike series from the Japanese manufacturer Kawasaki. It was introduced in 1995, and has been constantly updated throughout the years in response to new products from Honda, Suzuki, and Yamaha. The ZX series is what was known as the Ninja line of Kawasaki motorcycles in the 1980s and still carries the name today.
Kawasaki introduced the ZX-6R in 1995 with very similar looks and features like the 1994 introduced ZX-9R, including the ram-air intake that had been developed by Kawasaki since the 1990 ZX-11 (ZZ-R1100). The first ZX-6R had a dry weight of 401.2 pounds (182.0 kg), wet weight of 454 pounds (206 kg), and was capable of accelerating 0 to 60 miles per hour (0 to 97 km/h) in 3.6 seconds.
There was a major revamp of the ZX-6R in 1998 with the Launch of the G series. The G series saw no increase in displacement but power went from 100 BHP to 108 BHP thanks to the newly designed airbox. Fairing was revamped, but retained a similar design as far as the headlight, air intakes and screen were concerned. In 2000, the first J series replaced the G, increasing power to 112 BHP by increasing the compression ratio from 11.8:1 to 12.8:1. The J series sported a couple of modernisations including a 180 section rear tyre, second headlight, uprated generator and stick coils (coil on plug) replacing the traditional coil with HT lead.
With competition from Honda's CBR600F4i, Suzuki's GSX-R600, and Yamaha's YZF-R6 getting more aggressive, Kawasaki decided to make an unusual move for the late 2002 models. They increased the capacity of the traditional 600 cubic centimetres (37 cu in) motor to 636 cubic centimetres (38.8 cu in) with the ZX-6R A1P. This version used the J series bodywork with the only notable differences being the "636" stickers on the fairing. For riders who needed bikes for displacement-restricted racing, Kawasaki also made available a limited production 599 cubic centimetres (36.6 cu in) version called the Ninja ZX-6RR, but the 636 cubic centimetres (38.8 cu in) ZX-6R would be their main mass production middleweight sport bike.
In 2003, there were a number of changes to the ZX-6R, or ZX636 as it is often referred. The engine was fuel injected and engine speed was raised around 500 RPM which resulted in a slight gain in power. Radial-mounted four-piston brakes replaced the previous six-piston brakes and the front forks were now inverted. Chassis improvements resulted in higher rigidity and less weight. An all digital instrument panel was also introduced and a larger ram air inlet moved to the center over the headlight, running through the headstock. The bike, designation B1H, carried over to the 2004 model year with just color scheme changes. The ZX-6RR won the Supersport category award for Masterbike 2004 and placed third overall.
In 2005, Kawasaki again revamped the ZX-6R. Engine speed increased again by 1,000 RPM resulting in 113 horsepower (84 kW) at 12250 RPM . The frame and swingarm were updated, but the main changes from its predecessor lay in the design. The aluminum frame was now painted flat black, fairings were more round, and integrated turn signals were used (euro model). The exhaust was now centrally under the seat (a configuration commonly referred to as an undertail exhaust). Most of these changes were mirrored in the 599 cc ZX-6RR. For the second year in a row, the ZX-6RR again won the Supersport category award for Masterbike 2005 and placed third overall. The bike carried over to the 2006 model year with minor suspension changes and new color schemes.
After four years of offering their 636 cc ZX-6R for street use and an entirely separate 599 cc ZX-6RR for displacement-restricted racing classes, Kawasaki offered only one ZX-6R for 2007, and it displaced 599 cc. Previous years of the ZX-6R's engines were all built from the same basic design, but the all-new engine for 2007 was redesigned from the crankcase up. In following with what their competitors had already been doing, Kawasaki's new engine featured a stacked gear arrangement in which the crankshaft, primary drive and countershaft are placed in a triangular format for a shorter, more compact powerplant. Now about 40 mm smaller in both length and width and it is said to yield greater cornering clearance. By using a former 125 cc Grand Prix racer as the ZX-6R’s chief development rider, Tomomi Manako, Kawasaki claims a focus has been put on track usage. Frame, swingarm, suspension, brakes, and body were completely redesigned and the bike shares very few parts from the previous model. The ZX-6R was carried over to the 2008 model year with just color scheme changes.
For 2009, Kawasaki dramatically changed the appearance of the ZX-6R to match the more angular look of the ZX-10R. Kawasaki claims the new ZX-6R is 10 kg lighter than the previous model. The greatest changes for 2009 were the redesign of the exhaust, now carried low and not requiring the thick under-seat construction of 2008 and especially the introduction of the Showa Big Piston Fork (BPF) suspension for a more progressive brake-dive. The 2010 ZX-6R is changing once more with an improved engine and slipper clutch. The exhaust pre-chamber has more space and also limits exhaust noise giving the rider a smoother ride. New double bore intake funnels features two available heights which gives performance upgrades in both high and low engine speeds. The front seat is now lower.
For 2013, Kawasaki reintroduced the ZX-6R 636, while still continuing to sell the regular, 599 cc 2009-2012 ZX-6R at a lower price.
The 2013 ZX-6R 636 is a brand new bike. Engine displacement has again been increased to 636 cc, with two fuel maps available to choose via a switch on the handlebars. The new version has increased torque and horsepower, and the increased performance is apparent at lower RPM. While the tail is to the one in the 2009-2012 model, it features new front and side fairings, new dash, new frame, new Showa BPF-SFF front suspension, KTRC (Kawasaki Traction Control) with three modes (sport, city and rain) as standard equipment, and KIBS (Kawasaki Intelligent anti-lock Brake System) available as option.
In Showa's BPF-SFF (Big Piston Fork - Separate Function Fork) suspension, the left leg bar a bigger and stronger spring than the right one, with regulated pre-load. The right bar has bigger oil damper section, with regulated rebound and compression damping. According to the manufacturer, this asymmetric design provides a reduction of the friction inside the fork, significant mass loss and more friendly response of suspension. The KTRC system uses manipulation of the ignition timing on all 3 traction control modes, while mode 3 (rain mode) also uses a separate throttle controlled by the on-board electronics, to allow faster reaction for wheel over-spin on slippery surfaces. Traction control and power modes can be adjusted or turned off whenever the throttle is closed, even while riding the bike. The bike is sold without a steering damper, as Kawasaki reports that people complained about the OEM steering dampers in the previous model, so they decided to not include one into the new bike.
|Engine type||Transverse 4-stroke, liquid-cooled, DOHC, 4-valve, inline 4-cylinder|
|Displacement||599 cc (36.6 cu in)||636 cc (38.8 cu in)|
|Bore × stroke||66 x 43||66.0 mm × 43.8 mm (3 in × 2 in)||67.0 mm × 42.5 mm (3 in × 2 in)||68.0 mm × 43.8 mm (3 in × 2 in)||67.0 mm × 45.1 mm (3 in × 2 in)|
|Power (crank)||99.9 hp (74.5 kW) @ 12,500 rpm
||117 hp (87 kW) @ 13,000 RPM
||128.1 hp (95.5 kW) @ 14,000 RPM
130 hp (100 kW) @ 14,000 RPM with ram air 
|129.3 hp (96.4 kW) @ 13,500 RPM
101 kW (135 hp) @ 13500 RPM with ram air
52.36 lb·ft (70.99 N·m) @ 11,500 RPM
|Power (rear wheel)||105 hp (78 kW) @ 12,250 RPM||101.6 hp (75.8 kW) @ 12,700 RPM (US variant)||107.7 hp (80.3 kW) @ 14,100 RPM||111.4 hp (83.1 kW) @ 12,750 RPM||113.8 hp (84.9 kW) @ 14,000 RPM||112.24 hp (83.70 kW) @ 13,500 RPM|
|Torque (rear wheel)||65.00 Nm (6.6 kgf-m or 47.9 ft.lbs) @ 10000 RPM||61.8 N·m (45.6 lb·ft) @ 9,500 RPM||59.8 N·m (44.1 lb·ft) @ 11,750 RPM||59.0 N·m (43.5 lb·ft) @ 11,900 RPM||58.2 N·m (42.9 lb·ft) @ 12,000 RPM||63.9 N·m (47.1 lb·ft) @ 11,000 RPM||65.2 N·m (48.1 lb·ft) @ 11,500 RPM||62.87 N·m (46.37 lb·ft) @ 11,375 RPM|
|Fuel injection||Carb: Keihin CVKD36 (x 4)||Four Mikuni BDSR 36R carburetors||DFI with Keihin 38 mm (1 in) throttle bodies (4)||DFI with four 38 mm (1 in) Keihin throttle bodies, oval sub-throttles, two injectors per throttle body||EFI with Keihin 38 mm (1 in) throttle bodies||DFI with Keihin 38 mm (1 in) throttle bodies (4)|
|Transmission||6-speed||6-speed with slipper clutch||6-speed||6-speed with slipper clutch|
|Final drive||X-ring chain|
|Rake/trail||107mm||23.5°/91 mm (3.6 in)||24.5°/95 mm (3.75 in)||25.5°/110 mm (4.3 in)||25°/110 mm (4.3 in)||24°/100 mm (4.0 in)||23.5°/94 mm (3.7 in)||25°/110 mm (4.2 in)||23.5°/100 mm (4.0 in)|
|Front wheel travel||119 mm (4.7 in)|
|Rear wheel travel||135 mm (5.3 in)||135 mm (5.31 in)||135 mm (5.3 in)||132 mm (5.2 in)||135 mm (5.3 in)|
|Front tire size||120/60-17||120/60-ZR17||120/65-ZR17||120/70-ZR17||120/65-ZR17||120/70-ZR17|
|Rear tire size||160/60-17||170/60-ZR17||180/55-ZR17|
|Wheelbase||1400mm||1,400 mm (55.1 in)||1,400 mm (55.3 in)||1,400 mm (55.1 in)||1,390 mm (54.7 in)||1,390 mm (54.9 in)|
|Front suspension||41mm Telescopic forks||46 mm (2 in) cartridge fork with adjustable preload, compression and rebound damping||41 mm (2 in) inverted cartridge fork with adjustable preload, stepless rebound and compression damping, TiSiCN coating||41 mm (2 in) inverted cartridge fork with top-out springs, stepless rebound damping, stepless compression damping, fully adjustable spring preload||41 mm (2 in) inverted Showa big piston fork with top-out springs, stepless compression and rebound damping, fully adjustable spring preload||41 mm (2 in) inverted cartridge fork with adjustable preload, stepless rebound and compression damping||41 mm (2 in) inverted Showa big piston fork, separate function fork with top-out springs, stepless compression and rebound damping, fully adjustable spring preload|
|Rear suspension||mono shock, UNI-TRAK||Uni-Trak with adjustable preload, compression and rebound damping||Uni-Trak with adjustable preload, stepless rebound, (high/low speed) compression damping, and ride height||Bottom-link Uni-Trak with gas-charged shock, top-out spring and pillow ball upper mount, dual-range (high/low-speed) stepless compression damping, 25-way adjustable rebound damping, fully adjustable spring preload||Bottom-link Uni-Trak system with gas-charged shock, stepless rebound and compression adjustability||Uni-Trak with adjustable preload, stepless rebound and compression damping||Bottom-link Uni-Trak with gas-charged shock, top-out spring and pillow ball upper mount, dual-range (high/low-speed) stepless compression damping, 25-way adjustable rebound damping, fully adjustable spring preload|
|Front brake||Twin (dual) discs Tokico 4 pot caliper||Dual discs with 6-piston Tokico caliper||Dual 280 mm (11 in) semi-floating discs with radial-mount opposed 4-piston calipers||Dual 300 mm (12 in) floating petal-type rotors with radial mount, opposed 4-piston calipers||Dual 300 mm (12 in) petal rotors with dual radial-mounted, four-piston, four-pad calipers||Dual 280 mm (11 in) discs with 4-piston calipers||Dual 300 mm (12 in) floating petal-type rotors with radial mount, opposed 4-piston calipers||Dual 310 mm (12 in) petal rotors with dual radial-mount, Nissin 4-piston, monobloc calipers|
|Rear brake||Single disc Tokico 1 (single) pot caliper||Single disc with single-piston Tokico caliper||Single 220 mm (9 in) disc||Single 220 mm (9 in) petal-type rotor with single-piston caliper||Single 220 mm (9 in) disc||Single 220 mm (9 in) petal-type rotor with single-piston caliper|
|Fuel tank capacity||18 litres||18 L (4.0 imp gal; 4.8 US gal)||17 L (3.7 imp gal; 4.5 US gal)|
|Seat height||810 mm (31.9 inches)||810 mm (32 in)||825 mm (32.47 in)||820 mm (32.3 in)||820 mm (32.1 in)||830 mm (32.5 in)||810 mm (32 in)||830 mm (32.7 in)|
|Dry weight||182 kg (401 lb)||176 kg (388 lb)||161 kg (355 lb)||166.9 kg (368.0 lb)||161 kg (355 lb)||164 kg (362 lb)|
|Dry Weight (tested)||182 kg (401.2 pounds)||182.8 kg (403.0 lb)||182.1 kg (401.5 lb)||176.4 kg (389.0 lb)||183.3 kg (404.0 lb)|
|Wet weight (claimed)||184 kg||191.0 kg (421.0 lb) ||192.1 kg (423.4 lb)|
|Wet weight (tested)||195.0 kg (430.0 lb)||194.4 kg (428.5 lb)||189.6 kg (418.0 lb)||195.5 kg (431.0 lb)|
|0 to 60 mph (0 to 97 km/h)||3.6 sec.||3.0 sec.|
|0 to 1⁄4 mi (0.00 to 0.40 km)||10.58 sec. @ 213.01 km/h (132.36 mph)|
|Top speed||161.6 mph (260.0 km/h)||267 km/h (166 mph)||257–264 km/h (160–164 mph)|
|Fuel economy||41 mpg - 160 miles range||6.52 L/100 km; 43.4 mpg-imp (36.1 mpg-US)|
- Kawasaki Ninja series
- "Performance Index '10" (PDF), Motorcycle Consumer News, Bowtie Magazines, 2010, retrieved 2010-01-03
- "Ram Air: Test". Sport Rider. October 1999. Retrieved February 15, 2016.
- Kawasaki Weight and Measurements specifications from Sport Rider, accessed 16 December 2006
- Ash, Kevin (2010), "Big Piston Forks", Ash on Bikes, retrieved March 11, 2012 Originally published in the Motor Cycle News Tech Watch column
- Kawasaki ZX600 & 636 (ZX-6R) Service & Repair Manual. Haynes Publishing. 2003. pp. 10–13. ISBN 1844250652.
-  article from Kawasaki.com
-  article from Kawasaki.com
- 2009 Kawasaki Ninja ZX-6R Specifications article from Kawasaki.com
- 2006 Kawasaki Ninja ZX-6R Specifications article from Kawasaki.com
- 2013 Kawasaki Ninja ZX-6R Specifications
- 2004 official specifications PDF – Kawasaki
- 2005 official specifications PDF – Kawasaki
-  – Kawasaki
- 2008 Supersport Shootout Motorcycle USA
- Canet, Don (28 November 2012). "2013 KAWASAKI NINJA ZX-6R – DYNO TEST". Cycle World. Bonnier Corporation. Retrieved 29 October 2015.
- Canet, Don (July 2006), "Middleweight Greats", Cycle World, Newport Beach, California: Hachette Filipacchi Media U.S. – via Bondi Digital Publishing (subscription required), vol. 45 no. 7, pp. 40–52, ISSN 0011-4286
- 2007 ZX-6R preview from Motorcycle Daily
- 2007 Kawasaki ZX-6R – First Ride from Motorcycle USA
- First Ride: Year 2000 Kawasaki ZX-6R from Motorcycle.com
- Kawasaki ZX-6R reviews Road tests of every Kawasaki ZX-6R model since 1995
- 2003 ZX6RR Review from SportRider
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