Yamaha R3
42 hp, 321 cc, 366 lbs2019 - 2020
Kawasaki Ninja 300
39 hp, 296 cc, 384 lbs2012 - 2015
EngineYamaha R3Kawasaki Ninja 300
Displacement321 cc296 cc
Max power42 hp (@10 750 RPM)39 hp (@11 000 RPM)
Max torque21 lb ft (@9 000 RPM)19 lb ft (@10 000 RPM)
Redline12 245 RPM13 000 RPM
Idling speed1 200 RPM
ManagementFuel InjectionFuel Injection
LayoutDOHC Inline-2DOHC Inline-2
Compression11.20:110.60:1
Oil capacity2.27 quart2.27 quart
Oil type10W40, Motul 300V 10W40, Shell Rotella 10W4010W40, Motul 300V 10W40, Shell Rotella 10W40
Spark plug typeNGK CR8ENGK CR8E
CoolingLiquidLiquid
Valves48
Bore68.0 mm62.0 mm
Stroke44.1 mm49.0 mm
Throttle bore32.0 mm
Weight to power8.71 lbs/hp9.84 lbs/hp
Power to weight286 hp/2500lbs254 hp/2500lbs
Battery type12V, 7.0 Ah, GTZ8V12V 8Ah
GearboxYamaha R3Kawasaki Ninja 300
TypeSequentialSequential
ClutchWetWet
DriveChainChain
Chain type
Gears count66
Primary ratio3.0433.087
Final drive3.0713.0
1. gear2.5 (39 mph)2.714 (38 mph)
2. gear1.824 (53 mph)1.789 (58 mph)
3. gear1.348 (71 mph)1.409 (73 mph)
4. gear1.087 (89 mph)1.16 (89 mph)
5. gear0.92 (105 mph)1.0 (103 mph)
6. gear0.8 (120 mph)0.857 (120 mph)
ChasisYamaha R3Kawasaki Ninja 300
Frame typeSteel trellisDiamond, steel
Front susp.KYB USD, 129 mm travelTelescopic fork, 4.72 in travel
Rear susp.Swingarm, spring/shock absorber, coil spring/oil damper, 130 mm travelSwingarm (uni-trak) 132mm wheel travel
Dyno chart of 2019 Yamaha R3 and 2013 Kawasaki Ninja 300