2004S

Sport bikes, 250Ninja, 500R, ZX12R

Sport bikes

250Ninja/GPX250R

500Ninja, GPZ500S

250Ninja, GPX250R. Model name: EX250-F17

The smallest Ninja, EX250Ninja in the US and GPX250R other places. Though the 250Ninja is falls in the category of smaller sports bike but it

The GPX version, just the same as the 250Ninja

provides best value for riders for its high tech engine, lightweight, and sportbike styles. Above all it is more affordable. Kawasaki ninja 250R comes with liquid cooled, inline twin cylinder 4 stroke engine having dual overhead cams and 4 valves. It has 6-speed transmission, 14,000 rpm which gives a exciting ride.

Ninja500R, GPZ500S. Model name:EX500-D11
		Double the capacity of the Ninja 250 and you have the 500. Much the same, but more powerful. And as the 250 it have been around for ages. But over the years Kawasaki have refined it and made a great bike even better. Its a great all-rounder, good for sport and touring, loved bye the training firms. Powered bye a liquid-cooled, inline twin-cylinder four-stroke engine. With dual overhead cams actuating four valves per cylinder, the snappy motor is user-friendly and inspirational. Indeed, exploring the top end of this engine's rev range is entertaining for even the most seasoned riders. At the moment no picture of the GPZ500S.

	Big picture, modified bike

Sport bikes

ZX12R

ZX9R (2003)

ZX12R. Model name: ZX1200-B3

The ZX12R, Kawasaki's flagship have been around sins 2000, had an major update in 2002, and are still the worlds fastest and strongest motorcycle in 2004. For 2004, the ZX-12R's power delivery is further improved with the addition of sub throttles to the fuel injection system, and new radial-mounted front disc brakes enhance braking feel. Other changes are slightly different graphics.


2003	2004
The 2004 model looks just like the 2003 model except for the front brakes. (Picture above)

Performance:
	Hp:	178/190*		Torque:	134Nm
	Top speed
	0-402mkm/h		9.92s @ 229.98k**
	0-100km/h		-
	*)Without ram air and with ram air assistance.
	**)MotorCyclist Magazine Aug 2003

The ZX-12R's 16-valve, DOHC, 1199cc inline-four engine produces ample horsepower at all rpm range, and for 2004, a sub throttle assembly has been added to the Nippon-Denso electronic fuel-injection system to smooth power delivery. The ZX-12R system utilizes 46mm throttle bodies with injector tips spraying fuel directly at the intake valves, however, sudden changes in throttle opening can sometimes cause hesitation and inconsistent throttle response. The new sub throttles are placed further up the intake tract and are controlled by the electronic Engine Control Unit (ECU), which automatically adjusts air intake to more precisely match engine demand. The result is a smooth flow of power at all throttle positions, similar to that of constant velocity carburettor designs, with the efficiency of modern fuel injection.

A Ram Air duct not only improves the bike's overall aerodynamics, it also flaunts a distinct-looking, streamlined nosepiece that allows plenty of intake area. Ribbing within the ducts improves the ram-air effect at the sides, and offsets wind shear from cross breezes. Meanwhile, quiet dual-radiator fans keep the ZX-12R cool at low speeds.
For smooth and more precise shifting, the ZX-12R's six-speed transmission incorporates tight clearances between the gear dogs, while a clutch damper helps reduce driveline lash.

Some interesting ZX12 sites!!

The ZX-12R is supported by an aluminium monocoque frame with a cast steering head welded to pressed plates, then welded to a cast midsection that incorporates the battery case as a stressed member. The ZX-12R's light steering and planted feel is due to a steep steering-head angle.
A 43mm inverted cartridge fork with adjustable preload, compression and rebound damping also contribute to the ZX-12R's superb turning characteristics. Adjustability of the fork comes from a steeples damping adjuster, which incorporates a check valve for improved damping performance.

Kawasaki's patented UNI-TRAK® rear suspension uses a linkage system to progressively increase the damping and spring rate as the suspension is compressed. Like the fork, the shock uses a steeples compression and rebound damping adjuster.
Both ends of the ZX-12R wear 17-inch wheels with hexagonal tri-spokes. The six inch-wide rear rim is fitted with an ultra-wide 200/50 tire for excellent traction – a must for a bike as powerful as the ZX-12R.

Braking is accomplished with new radial-mounted, opposed four-piston callipers gripping large 320mm diameter dual front disc brakes and a single 230mm rear disc brake. First introduced on Kawasaki's own NINJA ZX-6R and ZX-6RR sportbikes, the radial front brake design utilizes mounting points at both the top and bottom of the calliper, with the mounting bolts inserted through the rear of the calliper instead of the side or front as on conventional designs. This racing-inspired setup makes the calliper more rigid to improve brake feel over a wider range of operation.