Kawasaki ZX-6R
122 hp, 636 cc, 414 lbs2003
Yamaha R6
121 hp, 600 cc, 401 lbs2003 - 2004
EngineKawasaki ZX-6RYamaha R6
Displacement636 cc600 cc
Max power122 hp (@13 000 RPM)121 hp (@13 000 RPM)
Max torque49 lb ft (@11 000 RPM)44 lb ft (@12 000 RPM)
Redline15 500 RPM15 500 RPM
Idling speed1 300 RPM
ManagementFuel InjectionFuel Injection
LayoutDOHC Inline-4DOHC Inline-4
Compression12.80:112.40:1
Oil capacity3.79 quart3.22 quart
Oil type10W40, Motul 300V 10W40, Shell Rotella 10W4010W40, Motul 300V 10W40, Shell Rotella 10W40
Spark plug typeNGK CR9ENGK CR9EK, NGK CR10EK
CoolingLiquidLiquid
Valves1616
Bore68.0 mm65.5 mm
Stroke43.8 mm44.5 mm
Throttle bore38.0 mm38.0 mm
Weight to power3.40 lbs/hp3.32 lbs/hp
Power to weight735 hp/2500lbs753 hp/2500lbs
Battery type12 V, 8 Ah12 V 8 Ah, GT9B-4
GearboxKawasaki ZX-6RYamaha R6
TypeSequentialSequential
ClutchWetWet
DriveChainChain
Chain type
Gears count66
Primary ratio2.0221.955
Final drive2.6663.0
1. gear2.923 (73 mph)2.846 (68 mph)
2. gear2.055 (103 mph)1.947 (100 mph)
3. gear1.722 (123 mph)1.556 (125 mph)
4. gear1.45 (146 mph)1.333 (146 mph)
5. gear1.272 (166 mph)1.19 (164 mph)
6. gear1.153 (184 mph)1.083 (180 mph)
ChasisKawasaki ZX-6RYamaha R6
Frame typeTubular, diamondDiamond
Front susp.Telescopic fork USD, 4.72 in travelTelescopic fork USD, 4.72 in travel
Rear susp.Swingarm (uni-trak) 5.31 in travelSwingarm link, spring/gas-oil damper