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 carburetor settings
Straightened air duct and carburetor holder
Revised ignition
Durability Improvements
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 igniter bracket
Chassis and Suspension
New UNI-TRAKŪ 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
Kawasaki Options (Available Through Kawasaki Dealers)
Flywheel rotors allow riders to alter the amount of engine inertia to suit riding style and track conditions
20-inch front wheel for various track requirements