From Kawasaki's press material:
2004 KAWASAKI NINJA(r) ZX-6RR
Features and Benefits:
Four-Cylinder 599cc Engine
- Reshaped combustion chambers and redesigned piston crowns help produce more power
- Molybdenum coating added to piston skirts to reduce friction and mechanical loss, contributing to the ZX-6RR's high-revving nature
- Intake and exhaust valves are larger for better breathing at all rpm
- Camshaft profile has higher lift for more performance
- Gear ratios for the oil pump changed to reduce mechanical loss
- Cut-outs added to the cylinder skirts to reduce pumping loss
Crankcase
- Crankcase is light and rigid, allowing piston oil jets to be positioned closer to pistons
Optimal Intake
- Short intake and exhaust valves reduce weight and improve high-rpm performance
- Larger intake valves help increase performance
- Single springs of oval-shape are lighter providing improved intake valve control at high rpm
- Stepped spring seats replace previous plain type to better stabilize the valve springs
Fuel Injection System
- Large-bore 38mm throttle bodies produce high engine output and low emissions
- Sub-throttle bodies ensure smooth, linear power characteristics
- New twin injectors improve cylinder filling for more power
Six-Speed Transmission w/Clutch Back-Torque Limiter
- Closer gear ratios for 2004 provide for more aggressive, competition-style performance
- Clutch back-torque limiter helps prevent wheel hop during quick deceleration
Digital Ignition
- 32-bit high-speed microprocessor-controlled timing is ultra-responsive
Lightweight Exhaust System
- Light exhaust system contributes to engine performance
- Stainless muffler housing improves catalyzer performance and reduces emissions
KLEEN(tm) (Kawasaki Low Exhaust Emission) System
- Helps keep exhaust emissions environmentally friendly
- KCA (Kawasaki Clean Air) system routes fresh air to the exhaust ports for reduced exhaust emissions
Ram Air Intake
- Centrally located ram-air duct reduces number of parts and weight to improve intake efficiency
- Greater resistance to wind side-drafts
Pressed Aluminum Perimeter Frame
- Rigid aluminum frame delivers crisp and stable handling
- Centrally mounted Ram Air duct is integrated with steering head to reduce weight and improve Ram Air efficiency
- Lightweight aluminum sub-frame facilitates maintenance
- Adjustable swingarm pivot for fine-tuning handling
- Steering head bearings use ball bearing type for light, responsive steering
- Threaded steering damper mount incorporated into left frame spar
Aerodynamic Cowling
- Race-inspired fairing and bodywork give the machine a distinctively racy look
- Fairing offers an exceptionally low drag coefficient for slippery aerodynamics
- Central Ram Air duct gives the front of the bike an aggressive identity
- Lightweight and powerful dual multi-reflector headlights provides exceptional visibility
41mm Inverted Kayaba Fork
- Fully adjustable fork runs stiff tubes for high fork rigidity and superior steering feedback
- Top-out springs and adjustable spring preload are fitted for stable performance throughout the stroke range
- Super-hard DLC (Diamond-Like Carbon) coating added to inner fork tubes to reduce friction
- Revised damping for improved action
Bottom-Link UNI-TRAK(r) Rear Suspension
- Nitrogen-gas charged Kayaba shock with piggyback reservoir is fully adjustable for rebound and compression damping
- Shock utilizes a threaded collar spring preload adjuster
- A top-out spring on the rear shock improves shock action
- Stepless damping adjuster with check valve instead of needle valve for improved damping
- Adjustable ride height with 1mm shims
Stopping Power
- Radial-mounted, four-piston, four-pad front brake calipers
- Four independent brake pads are used in each caliper for more even wear and improved heat resistance
- Semi-floating 280mm steel front disc rotors are 6mm thick for high heat capacity and mount on flat disc carriers without offset for reduced weight
- Brake lever is five-way adjustable
- Small diameter rear brake disc measures 220mm in diameter without offset for low unsprung weight
- Front brake hose routing eliminates interference with radiator
Instrument Cluster
- Instrument cluster features a bar-type LCD tachometer, digital LCD speedometer, programmable shift indicator light and stopwatch-style 99 lap timer
- Cluster also includes digital temp gauge, clock, tripmeter and comprehensive range of indicator lamps
Details
- Handlebar, seat and footpeg location enhance a track oriented riding position
- One-piece forged aluminum handlebars
- Ergonomically shaped seat and tank allow rider to mold to bike
- LED taillight is very light, highly compact, very durable and looks exceptionally cool
- Tamper resistant ignition switch
- Quick-detach rear seat allows easy mounting of standard aerodynamic single-seat cover
- Extruded aluminum swingarm with internal ribbing offers strong, torsional rigidity and low weight
- Friction-reducing sealant on the front brake caliper pistons improves brake feel
- Lime green coating added to side plates of X-ring drive chain for cool, racy look
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