2004 Kawasaki Ninja ZX-6R 636 Review

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2004 Kawasaki Ninja ZX-6R 636
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2004 Kawasaki Ninja ZX-6R 636
2004 Kawasaki Ninja ZX-6R 636

2004 Kawasaki Ninja ZX-6R 636
2004 Kawasaki Ninja ZX-6R 636

2004 Kawasaki Ninja ZX-6R 636 Review

2004 Kawasaki Ninja ZX-6R 636

Beat the track.

Introduced last year with AMA SuperSport competition in mind, the 2004 Ninja ZX-6R 636 sport motorcycle returns to the 2004 Kawasaki lineup with upgrades to the engine and powertrain for even higher on-track performance.

The ZX-6RR engine is a liquid-cooled, DOHV, 16-valve, 599cc, four cylinder, four-stroke engine that delivers performance worthy of AMA Supersport competition. To give racers and sportbike enthusiasts even more power, Kawasaki engineers changed the shape of the combustion chambers, redesigned the piston crowns and added molybdenum coating to the skirts to reduce friction and mechanical loss. In conjunction with these changes, intake ports are smaller to further increase induction velocity, intake valves are 0.5mm larger for better breathing at all rpm and camshaft profiles have been changed to produce more lift. Gear ratios for the oil pump have also been changed to reduce mechanical loss, contributing to the engine’s high-revving nature.

With feedback from Kawasaki factory roadracers Tony Meiring and Tommy Hayden, both of whom compete aboard the 2004 Ninja ZX-6R 636 sportbikes in AMA Supersport roadracing, several modifications have been made to the middleweight ZX-6RR, including new cams, larger intake valves, a revised intake system and new gear ratios for the six-speed transmission.


2004 Kawasaki Ninja ZX-6R 636 Key Features



2004 Kawasaki Ninja ZX-6R 636 – Specifications/Technical Details
USA MSRP Price: $8,399 USD
Canadian MSRP Price: See dealer for pricing in CDN

Length 79.7 in.

Height 43.7 in.

Width 28.3 in.

Weight 355 lbs.

Ground Clearance 5.1 in.

Wheelbase 55.1 in.

Seat Height 32.5 in.

Engine Four-stroke, DOHC, inline four cylinder, Electric Start, Liquid Cooled

Displacement 599cc

Bore x Stroke 67.0 x 42.5mm

Compression Ratio 13.5: 1

Fuel System Fuel injection with four 38mm throttle bodies

Fuel Capacity 4.8 gal.

Ignition Digital

Transmission Six-speed

Final Drive n/a

Brakes Front: 280mm dual hydraulic discs
Rear: 220mm single hydraulic disc

Tires Front: 120/65 x 17
Rear: 180/55 x 17

Frame Perimeter, pressed-aluminum

Suspension Front: 41mm inverted cartridge fork w/adj. compression and rebound damping, adj. spring preload; 4.7 in. travel
Rear: Bottom-link UNI-TRAK® system w/gas-charged shock, stepless rebound and compression adjustability; 5.3 in. travel

Colors Lime Green

Suggested Starting Price shown does not include tax, title, or destination charge. Dealer prices may vary.


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