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Sportbikes

2003Kawasaki ZX-9R Ninja

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The 2003 Kawasaki ZX-9R Ninja is a mid-sized sport bike best suited for intermediate to experienced riders seeking strong acceleration and reliable performance. Known for its muscular inline-four engine delivering 150 horsepower, it offers an excellent balance of power and manageable weight, making it ideal for both track days and spirited road riding.

Capacity: 899.0 ccm
Engine: In-line four, four-stroke
Gearbox: 6-speed
Dry weight: 186.0 kg
Seat height: 827 mm
Power: 150.0 HP (110.3 kW)

⇄ Compare with another bike ＋ Add to garage All model years ⚠ Recalls listed (1)

What’s new for the 2003 Kawasaki ZX-9R Ninja

vs the 2002

Spec	2002	2003
Power	144.0 HP (105.9 kW) @ 11000 RPM	150.0 HP (110.3 kW)
Front brakes	Dual disc	not listed

Other years 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail5%

Cornering85%

City riding45%

Daily riding42%

Touring35%

Two-up35%

Track85%

Best for: Built primarily for fast road riding and track days, blending litre-bike power with a slightly more manageable 900cc package.
Built for: A raw, aggressive superbike with a strong mid-range punch and a chassis that rewards confident, assertive inputs.
Not ideal for: This is not the right choice for new riders, commuters seeking comfort, or anyone planning long-distance touring or off-road use.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Will it fit you?

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Your height

Inseam (optional)

Units

At 827mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with balls of both feet on the 2003 Kawasaki ZX-9R Ninja, with a cramped knee angle of around 70 degrees and a forward-leaning riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at 821-900 mm — Long Legs →

Find bikes that fit your height →

Reliability & safety

Bike Reliability score, safety recalls and owner complaints

Safety recalls

⚠ 1 recall may apply

ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATORDec 2002 · 02V324000

ON CERTAIN 2000 ZX1200-A1/A1-L, 2001 ZX1200-A2/A2-L, AND 2002-2003 ZX1200-B1/B1-L MOTORCYCLES, OIL LEAKING FROM THE ALTERNATOR LEAD ELECTRICAL CONNECTOR CAN BE DEPOSITED ONTO THE REAR TIRE.

Risk: THIS CAN CREATE THE POTENTIAL FOR A LOSS OF TRACTION FOR BRAKING OR CORNERING, AND CAN LEAD TO A CRASH.

Remedy: DEALERS WILL SEAL THE ALTERNATOR LEAD WIRES. OWNER NOTIFICATION BEGAN BEGIN DECEMBER 16, 2002. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT KAWASAKI AT 1-949-770-0400.

These recalls cover some 2003 bikes of this model. Whether one applies to a specific bike, and whether the repair has already been done, depends on its VIN — check your VIN with NHTSA, use gov.uk/check-vehicle-recall in the UK, or ask a dealer.

Source: NHTSA. View all Kawasaki recalls →

Bike Reliability

How the score works →

out of 100Good

The 2003 Kawasaki ZX-9R Ninja passed its annual roadworthiness test first time 85.1% of the time, 4.2 points above expected for bikes of the same age and mileage. That beats 66% of models.

All years of this model: 47 / 100 (average) from 45,555 tests.

85.1%Passed first time

8.3%Failed outright

6.6%Fixed during test

17,000Typical miles

3,783Tests

Pass rate by miles ridden

0-10k

87.2%

10-20k

83.9%

20-30k

79%

30-40k

76.3%

40-50k

73.6%

50k+

75%

All years of this model.

Score by year first registered

199419951996199719982001200220032004

Against its rivals · ranks 6 of 6

#	Model (all years)	Score	Tests
1	Honda VTR 1000 SP-2	86 Excellent	4,174
2	Triumph Daytona 955I	63 Good	22,679
3	Yamaha YZF-R1	61 Good	206,988
4	Suzuki GSX-R1000	60 Good	138,388
5	Buell Firebolt XB9R	51 Average	2,721
6	Kawasaki ZX-9R Ninja	47 Average	45,555

Rivals are the most-viewed bikes on MotorcycleDB in the same category and engine size, from within three years of this model.

From British annual roadworthiness tests, 2005-2025. Contains public sector information licensed under the Open Government Licence v3.0 (DVSA MOT test data, Great Britain). How Bike Reliability works.

Full specifications

Engine

Capacity: 899.0 ccm
Power: 150.0 HP (110.3 kW)
Torque: 101.0 Nm (10.3 kgf-m) @ 9000 RPM
Engine type: In-line four, four-stroke
Power/weight ratio: 0.8065 HP/kg (dry)
Bore x stroke: 75.0 x 50.9 mm
Compression: 11.5:1
Cooling system: Liquid
Fuel system: Carburettor
Starting: Electric
Valves per cylinder: 4

Transmission

Gearbox: 6-speed
Transmission type: Manual
Final drive: Chain

Dimensions & weight

Wheelbase: 1417 mm
Overall length: 2058 mm
Overall width: 747 mm
Overall height: 1152 mm
Seat height: 827 mm
Dry weight: 186.0 kg
Wet weight: 213.0 kg
Fuel capacity: 18.00 litres
Ground clearance: 158 mm

Chassis & suspension

Front wheel travel: 120 mm
Rear wheel travel: 135 mm

Brakes & wheels

Front brakes diameter: 320 mm
Rear brakes: Single disc
Rear brakes diameter: 220 mm
Front tyre: 120/70-ZR17
Rear tyre: 190/50-ZR17
Front brakes: Not on record - add it

Other

Color options: Blue, Silver, Green

Specs last verified against published sources: November 2026.

Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.

What changed, year to year

Differences highlighted

Specification	1994	1996	1999	2001	2003
Capacity	899 cc	899 cc	899 cc	899 cc	899 cc
Dry weight	215 kg	215 kg	184 kg	185 kg	186 kg
Seat height	800 mm	800 mm	815 mm	825 mm	827 mm
Fuel capacity	20 L	20 L	19 L	19 L	18 L
Bike Reliability ⓘ	31 Below average	33 Below average	Too few tests	55 Average	66 Good