Kawasaki Ninja ZX-6R

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Kawasaki Ninja ZX-6R
Zx6r 2013 white
Manufacturer Kawasaki
Production Since 1995
Predecessor ZZR600/ZX-6E, Ninja 600R
Class Sport bike[1]
Engine 636 cc (38.8 cu in) inline-4
Bore / stroke 67.0 mm × 45.1 mm (2.64 in × 1.78 in)
Compression ratio 12.9:1
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)
Transmission 6-speed
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 (4.0 in)
Wheelbase 1,394.46 mm (54.900 in)
Dimensions L: 2,085 mm (82.1 in)
W: 705 mm (27.8 in)
H: 1,115 mm (43.9 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 ZX-6RR, ZX-9R, ZX-10R

The Kawasaki Ninja ZX-6R is a 600 cc class sport motorcycle built by the Japanese motorcycle manufacturer Kawasaki.[1] 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.

1997 Kawasaki Ninja ZX-6R

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.

2002 Kawasaki Ninja ZX-6R

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.

2005 Kawasaki Ninja ZX-6R

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.[2] 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.

2007 Kawasaki Ninja ZX-6R

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.

2009 Kawasaki Ninja ZX-6R

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)[3] 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.

2013 Ninja 636

For 2013, Kawasaki decided to split Ninja ZX-6R into two different models - ZX-6R and ZX-6R 636.

ZX-6R is same bike as ZX-6R 2009-2012, 600cc engine, dedicated to track use and supersport, sold with factory steering damper, cheaper a little than ZX-6R 636.

The 2013 ZX-6R 636 is a completely brand new bike. Engine displacement has again been increased to 636cc, with two fuel maps available to choose by button on handlebars. The new version has increased torque and horsepower, and the increased performance is apparent at lower rpm. New front and side fairings (tail is identical to 2009-2012), 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 Sport ABS) available as option. Bike is sold without factory steering damper, as Kawasaki claims that people complain about the OEM steering dampers in previous model and decided to not include it into the new bike.

Showa BPF-SFF (Big piston fork - Separate function fork) use innovative approach. Left leg has a bigger and stronger spring than the right leg, with regulated pre-load. Right leg has bigger oil damper section, with regulated rebound and compression damping. By this asymmetric design, reduction of friction inside fork, significant mass loss and more friendly response of suspension is claimed by manufacturer.

The KTRC (Traction control) system uses manipulation 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 when bike is in motion and decelerating.


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) 599 cc (36.6 cu in) 636 cc (38.8 cu in)
Bore × stroke 66.0 mm × 43.8 mm (2.60 in × 1.72 in) 68.0 mm × 43.8 mm (2.68 in × 1.72 in) 67.0 mm × 42.5 mm (2.64 in × 1.67 in) 67.0 mm × 45.1 mm (2.64 in × 1.78 in)
Power (crank) 74.5 kW (99.9 hp) @ 12,500 rpm
87 kW (117 hp) @ 13,000 rpm

91.5 kW (122.7 hp) @ 13,000 rpm with ram air [10]

95.5 kW (128.1 hp) @ 14,000 rpm

100 kW (130 hp) @ 14,000 rpm with ram air [11]

129.3 hp (96.4 kW) @ 13,500 rpm
135 hp (101 kW) @ 13500 rpm with RAM Air
70.99 N·m (52.36 lb·ft) @ 11,500 rpm [12]
Power (rear wheel) 111.4 hp (83.1 kW) @ 12,750 rpm[2] 113.8 hp (84.9 kW) @ 14,000 rpm[2] 105 hp (78 kW) @ 12,250 rpm[2] 101.6 hp (75.8 kW) @ 12,700 rpm (US Variant)[13] 107.7 hp (80.3 kW) @ 14,100 rpm[14]
Torque (rear wheel) 61.8 N·m (45.6 lb·ft) @ 9,500 rpm 63.9 N·m (47.1 lb·ft) @ 11,000 rpm[2] 65.2 N·m (48.1 lb·ft) @ 11,500 rpm[2] 59.8 N·m (44.1 lb·ft) @ 11,750 rpm[2] 59.0 N·m (43.5 lb·ft) @ 11,900 rpm[13] 58.2 N·m (42.9 lb·ft) @ 12,000 rpm[14]
Compression ratio 11.8:1 12.8:1 12.9:1 13.0:1 13.9:1 13.3:1 13.3:1 12.9:1
Fuel injection Four Mikuni BDSR 36R carburettors EFI with Keihin 38 mm (1.5 in) throttle bodies DFI with Keihin 38 mm (1.5 in) throttle bodies (4) DFI with four 38 mm (1.5 in) Keihin throttle bodies, oval sub-throttles, two injectors per throttle body DFI with Keihin 38 mm (1.5 in) throttle bodies
Transmission 6-speed 6-speed w/slipper clutch
Final drive X-ring Chain
Rake/trail 23.5°/91 mm (3.6 in) 23.5°/94 mm (3.7 in) 25°/110 mm (4.2 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°/100 mm (4.0 in)
Front wheel travel 120 mm (4.7 in)
Rear wheel travel 130 mm (5.3 in) 135mm (5.31 in) 130 mm (5.3 in) 130 mm (5.2 in) 130 mm (5.3 in)
Front tire size 120/60-ZR17 120/65-ZR17 120/70-ZR17
Rear tire size 170/60-ZR17 180/55-ZR17
Wheelbase 1,400 mm (55.1 in) 1,390 mm (54.7 in) 1,400 mm (55.1 in) 1,400 mm (55.1 in) 1,400 mm (55.3 in) 1,400 mm (55.1 in) 1,390 mm (54.9 in)
Front suspension 46 mm (1.8 in) Cartridge fork with adjustable preload, compression and rebound damping 41 mm (1.6 in) Inverted Cartridge Fork with Adjustable Preload, Stepless Rebound and Compression Damping 41 mm (1.6 in) Inverted Cartridge Fork with Adjustable Preload, Stepless Rebound and Compression Damping, TiSiCN Coating 41 mm (1.6 in) inverted cartridge fork with top-out springs, stepless rebound damping, stepless compression damping, fully adjustable spring preload 41 mm (1.6 in) inverted Showa Big Piston Fork with top-out springs, stepless compression and rebound damping, fully adjustable spring preload 41 mm (1.6 in) inverted Showa Big Piston Fork - Separate Function Fork with top-out springs, stepless compression and rebound damping, fully adjustable spring preload
Rear suspension Uni-Trak with adjustable preload, compression and rebound damping Bottom-link Uni-Trak system with gas-charged shock, stepless rebound and compression adjustability Uni-Trak with Adjustable Preload, Stepless Rebound and Compression Damping Uno-Trak with Adjustable Preload, Stepless Rebound, High and 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
Front brake Dual discs with 6-piston Tokico caliper 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 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 310 mm (12 in) petal rotors with dual radial-mount, Nissin four-piston, monobloc calipers
Rear brake Single disc with single-piston Tokico caliper Single 220 mm (8.7 in) Disc Single 220 mm (8.7 in) petal-type rotor with single-piston caliper Single 220 mm (8.7 in) Disc Single 220 mm (8.7 in) petal-type rotor with single-piston caliper
Fuel tank capacity 18 L (4.0 imp gal; 4.8 US gal) 17 L (3.7 imp gal; 4.5 US gal)
Seat height 810 mm (32 in) 830 mm (32.5 in) 810 mm (32 in) 825 mm (32.47 in) 820 mm (32.3 in) 820 mm (32.1 in) 830 mm (32.7 in)
Dry weight 176 kg (388 lb) 161 kg (355 lb)[10] 164 kg (362 lb)[11] 161 kg (355 lb) 166.9 kg (368.0 lb)
Dry Weight (tested) 176.4 kg (389.0 lb)[2] 183.3 kg (404.0 lb)[2] 182.8 kg (403.0 lb)[2] 182.1 kg (401.5 lb)[13]
Wet weight (claimed) 191.0 kg (421.0 lb) [8] 192.1 kg (423.4 lb)
Wet weight (tested) 189.6 kg (418.0 lb)[2] 195.5 kg (431.0 lb)[2] 195.0 kg (430.0 lb)[2] 194.4 kg (428.5 lb)[13]
0 to 60 mph (0 to 97 km/h) 3.0 sec.[15]
0 to 14 mi (0.00 to 0.40 km) 10.58 sec. @ 213.01 km/h (132.36 mph)
Top speed 267 km/h (166 mph) 257–264 km/h (160–164 mph)[1][15]
Fuel economy 6.52 L/100 km; 43.4 mpg-imp (36.1 mpg-US)[15]


  1. ^ a b c "Performance Index '10" (PDF), Motorcycle Consumer News (Bowtie Magazines), 2010, retrieved 2010-01-03 
  2. ^ a b c d e f g h i j k l m Kawasaki Weight and Measurements specifications from Sport Rider, accessed 16 December 2006
  3. ^ Ash, Kevin (2010), "Big Piston Forks", Ash on Bikes, retrieved March 11, 2012 Originally published in the Motor Cycle News Tech Watch column 
  4. ^ Kawasaki ZX600 & 636 (ZX-6R) Service & Repair Manual. Haynes Publishing. 2003. pp. 10–13. ISBN 1844250652. 
  5. ^ 2006 Kawasaki Ninja ZX-6R Specifications article from Kawasaki.com
  6. ^ [1] article from Kawasaki.com
  7. ^ [2] article from Kawasaki.com
  8. ^ a b 2009 Kawasaki Ninja ZX-6R Specifications article from Kawasaki.com
  9. ^ 2013 Kawasaki Ninja ZX-6R Specifications
  10. ^ a b 2004 official specifications PDF – Kawasaki
  11. ^ a b 2005 official specifications PDF – Kawasaki
  12. ^ [3] – Kawasaki
  13. ^ a b c d 2008 Supersport Shootout Motorcycle USA
  14. ^ a b Motorcycle.com
  15. ^ a b c Canet, Don (July 2006), "Middleweight Greats", Cycle World (Newport Beach, California: Hachette Filipacchi Media U.S.  – via Bondi Digital Publishing (subscription required)) 45 (7): 40–52, ISSN 0011-4286 

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