Cross &Enduro Page 2

    Kawasaki have for years made motocross bikes and have been on the top right from the beginning in the early 60's. In this pages you will hopefully find every Kawasaki motocross bike made in 2004. From the small KDX50 to the big KX500 At the same time Kawasaki are making a complete line of excellent Enduro bikes, also added here. All colours are shown....Lime Green    
 
  Part 2: Moto Cross.  The big ones: Two Stroke        
 
 
 

Power, weight & seat height
41hp, 87kg, 945mm
The KX125-M2, first out of the big ones. In the quest for power in the highly competitive 125 class, Kawasaki engineers succeeded in boosting overall power of the 2004 KX125 and revised the chassis for sharper handling characteristics. This is what have been changes for 2004 over the 2003 model.

Engine: Refinements to the liquid-cooled, two-stroke engine result in improved power. These include:
• Reshaped combustion chamber, • Higher compression ratio, • Piston ring locating pin moved to rear of piston to evenly distribute ring pressure at front of piston, • Improved KIPS design provides better seal to piston, • Reshaped expansion chamber provides more power and is recessed from rider’s leg , • Two-stage reed valve increases low-end flexibility, prevents over-flexing at high rpm, • New carburettor settings, • Straightened air duct and carburettor holder, • Revised ignition, • Increased clearance between connection rod big-end and nylon crankcase stuffer, increasing lubrication, • New connecting rod made of stronger steel
• Left crankcase casting is more rigid, clutch cable-to-case now sealed with an O-ring, • Stronger radiator side brackets help prevent deformation, • Engine bolts made of stronger steel, • Stronger exhaust silencer mounting brackets and stronger igniters bracket

Chassis and Suspension:
• New UNI-TRAK® rear suspension link is anchored on the swingarm, drastically reducing front-to-back movement of the shock, resulting in smoother, more stable action and improving traction at the rear wheel when accelerating, • Forged, one-piece actuating rod for UNI-TRAK replaces two-piece extrusions, • Frame construction is lighter due to suspension loads being absorbed by the new 20mm longer swingarm,
• Upper cross tubes and engine mounts are modified to idealize stiffness balance for enhanced cornering performance and improved durability, • New semi-sealed cartridge fork provides better damping and fork action, • More compact front axle brackets feature new clamping method, • Adjustable rubber handlebar mounts help reduce vibration, • Flatter seat improves riding position and raises seat height 8mm, • Textured slip-resistant seat cover helps keep rider in place, • Foot pegs raised 3mm to suit the improved riding position
• Rear brake pedal pivot is mounted 11.5mm higher for increased ground clearance, • Fuel tank uses oblong mounting hole for easier maintenance

 
   
   
 

Modifications for 2004:

A lot see above  
 
 
 

Power, weight & seat height
56.5hp, 97kg, 945mm
Double the capacity of the KX125-M2 and you have the KX250. Similar to the 125, the new 250 received many new features and change's to help improve power, durability and the rider compartment was adjusted to be a bit more comfortable. 

ENGINE: To give the 249cc two-stroke engine excellent top-end without sacrificing  low-to mid-range power, the combustion chamber has been reshaped for higher compression, the intake ports have been reshaped, and the new crankcase casting eliminates the boost port at the rear of the cylinder to speed the fuel-air mixture through the transfer ports. A one-piece aluminium KIPS® valve replaces the earlier two-piece steel valve,  and new expansion chamber dimensions all contribute to improved power delivery. New carburettor settings that provide crisper response at partial throttle, reshaped air duct and intake manifold for straighter airflow. New ignition timing and ignition rotor to improved power across the entire rpm range. To further enhance throttle response, the crankcase stuffers mounted to the crank webs have been changed from aluminium to nylon and lead inertia weights have been eliminated. Piston durability has been improved by streaking the skirt with fine oil-retaining grooves and by tin-plating the piston.

CHASSIS: The most significant change to the KX250 chassis is the new-link UNI-TRAK® rear suspension system. Unlike previous KX models in which the UNI-TRAK link was anchored to the frame, the link on the new system is anchored on the swingarm. This drastically reduces front-to-back movement of the shock as the suspension is compressed, resulting in smoother suspension action and significantly improved traction, especially while accelerating.  Frame construction is lighter due to suspension loads being absorbed by the new 2mm longer swingarm.  Up front there is a new Kayaba 48mm, works-type semi-sealed cartridge inverted fork.  Foot pegs raised 3mm to suit the improved riding position. Rear brake pedal pivot is mounted 11.5mm higher for increased ground clearance  Seat height has been raised 8mm in the middle for a flatter profile and the seat  features a new textured slip-resistant cover.

A host of optional parts for the 2004 KX250 are available through Kawasaki dealers, including a lower seat, 20-inch front rim, a selection of aluminium and steel front and rear sprockets, different fork and shock spring rates and solid brake discs.

 
   
   
  Modifications for 2004: A lot see above  
 
 
 

KX500 KX500-E16

Power, weight & seat height
64.5hp,-,-

The biggest and strongest you get, the KX500. Power for the KX500 comes from a liquid-cooled 499cc  two-stroke witch pumps out big-bore horsepower for the entire rpm range. There are powerful front and rear disc brakes provide aggressive stopping power, and fully adjustable suspension components. Incredibly fast and never lacking for torque, it is made for the experienced racer who wants a machine that never ceases to amaze with its ability to win high-speed desert races, climb the steepest hill or manoeuvre through the most challenging Hare & Hound course. A string of racing victories, including nine Baja 1000 championships and nine AMA National Hare & Hound championships, prove this Kawasaki is the king of KX motocross bikes.  The KX500 have not been so frequently updated as the 125 and 250 but its still a modern motocross bike with all the right equipment.

Features and Benefits:  Electro fusion cylinder improves heat transfer for consistent power output,  porous design holds lubrication well and resists abrasion and seizure and allows closer engine tolerances for more horsepower. Liquid Cooling  for even-running temperatures helps ensure consistently strong power output. KIPS-D  Controls exhaust port height to provide optimum exhaust timing at all rpm and produces a broader power band, more low-end torque and more top-end power, bleeds down compression pressure at cranking speeds, making kick-starting a breeze. 39mm Crescent Slide Carburettor  for smooth transitions at intermediate throttle openings at all rpm. High-tensile Steel Frame, semi-double cradle design with bolt-on aluminium rear section and race-proven frame geometry offers nimble turning and unmatched stability. 46mm Upside-down Cartridge Fork offer great rigidity for a confidence-inspiring ride without a weight penalty.  18-way rebound and compression damping adjustments are provided to fine tune for different riders and conditions. UNI-TRAK® Rear Suspension with lightweight aluminium-constructed swingarm keeps weight to a minimum.  20-way compression and 18-way rebound-damping adjustment, along with spring preload adjustability, allow the rider to fine tune rear suspension. Triple-bearing Rear Hub, two ball bearings on the drive side of the hub and the brake side help ensure durability.  Rear hub oil seals improve bearing durability and hollow rear axel reduces weight

NOTE: 2004 may be the last year of the KX500, and the last of the really big two strokes.
 
   
   
  Modifications for 2004: New graphics.  
 

Moto Cross. Four-stroke

 
 
 
 

KX250-N1
 
 
 
Power, weight & seat height
43hp, 92.5kg & 960mm
 

For the first time in history a four stroke Kawasaki motocross bike. With an all-new liquid-cooled four-stroke engine, new perimeter frame and suspension, the KX250F is designed for 125-class motocross and Supercross competition.

The KX250F is powered by a  single-cylinder, 249cc, liquid-cooled, four-stroke engine featuring double overhead cams and four valves. With an over-square bore and stroke of  77.0 x 53.6mm to help ensure high revs, it features a forged piston, chrome composite plated aluminium cylinder, titanium valves, billet camshafts and alloy steel tappets. The engines semi-dry oil sump contributes to a low center of gravity.  To keep the KX250F as light as possible, several engine components are made from lightweight materials, including magnesium generator, outer clutch and cylinder head covers, titanium exhaust head pipe and aluminium silencer. The KX250F is designed to start easily, whether hot or cold, due to its KACR system. Ignition is provided by a digital AC-CDI system featuring a dual ignition map and rev limiter. When the transmission is in neutral, the ignition allows for a low idling speed. When the transmission is in gear, the second ignition map is used, increasing idle rpm for reduced engine-braking effect. The new engine is matched to a quick-shifting, five-speed transmission. The transmission uses a ratchet shift mechanism for light shifting action, and clutch components are the same as those used on the KX125.

         

The KX250F frame has new D-section tubes on the upper frame rails, enabling the slim bodywork to hug the frame more tightly. Plus, frame width has been narrowed 40mm at the foot pegs. Combined with a steeper rake angle and foot pegs that are placed higher and closer together in the frame, the slimmer profile improves rider position on the bike for enhanced cornering performance. A new Kayaba semi-sealed,  inverted cartridge fork handles front suspension duties for the KX250F and features 16-way compression and rebound damping settings. On the rear, a revamped UNI-TRAK® rear suspension with 16-way compression and rebound damping settings, similar to that of the KX125 and KX250.  Stopping power is provided by a dual-piston 250mm front disc brake with a brake hose made of a single layer  Kevlar and is routed directly to the front calliper, improving brake feel and reducing weight. The 240mm rear brake features a more compact calliper to ensure adequate clearance for the muffler when the suspension is fully compressed, and the brake pedal is forged for high strength and light weight.

Restyled bodywork distinguishes the KX250F from its two-stroke cousins, including a longer rear fender, side covers that are more oblong in shape and sharply angled radiator shrouds that give the bike an aggressive, streamlined. stance. Plus, the seat is flatter than on previous KX models and features a textured slip-resistant cover. In addition to redesigned fork guards, the KX250F also features an aluminium skid plate and plastic side guards to protect the engine.

 
   
   
  Modifications for 2004: Brand new, similar to the Suzuki RM-Z250  
 
 
 
 

Kawasaki model information in PDF Format.

 
        KX250F 2004 Sales Guide. Very informative!
  KX125-M2   KX250F-N1   All KX 2004   Big pictures of the KX250F, 2894 x 2264 KX250F  Sales Guide  
 
                 
     
 
KX125
 
 
   
   
     
 
KX125
 
 
   
   
     
 
KX125
 
 
   
   
     
 
KX250
 
 
     
 
KX250
 
 
     
 
KX250
 
 
     
 
KX500
 
 
     
 
KX500
 
 
     
 
KX500
 
 
     
 
KX250F
 
 
     
 
KX250F
 
 
     
 
KX250F
 
 
     
 
KX250F
 
 
     
 
KX250F
 
 
     
  Bike Link About      
  KX125 2004

Read a test of the KX125 and KX250 at Dirt Rider Magazine

 
  KX250F 2004 A test of the new KX250F and its cousin the Suzuki RM-Z250  
  KLX125 2004

Another KX250F test in Motorcycle Daily.

 
  ALL KX

Tech  tips, Race Tuning, Suspension Settings, Carburettor Jetting. You name it, its all here.

 
             
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