Yamaha R3
42 hp, 321 cc, 166 kg2019 - 2020
Kawasaki ZX-25R
45 hp, 249 cc2020
MetricUS
EngineYamaha R3Kawasaki ZX-25R
Displacement321 cc249 cc
Max power42 hp (@10 750 RPM)45 hp (@12 000 RPM)
Max torque29 Nm (@9 000 RPM)33 Nm (@9 000 RPM)
Redline12 245 RPM17 000 RPM
Idling speed1 200 RPM1 200 RPM
ManagementFuel InjectionFuel Injection
LayoutDOHC Inline-2DOHC Inline-4
Compression11.20:1
Oil capacity2.40 litre
Oil type10W40, Motul 300V 10W40, Shell Rotella 10W40
Spark plug typeNGK CR8E
CoolingLiquidLiquid
Valves4
Bore68.0 mm
Stroke44.1 mm
Throttle bore32.0 mm
Weight to power3.95 kg/hp
Power to weight253 hp/Ton
Battery type12V, 7.0 Ah, GTZ8V
GearboxYamaha R3Kawasaki ZX-25R
TypeSequentialSequential
ClutchWetWet
DriveChainChain
Chain type
Gears count60
Primary ratio3.043
Final drive3.071
1. gear2.5 (62 km/h)
2. gear1.824 (85 km/h)
3. gear1.348 (115 km/h)
4. gear1.087 (143 km/h)
5. gear0.92 (169 km/h)
6. gear0.8 (194 km/h)
ChasisYamaha R3Kawasaki ZX-25R
Frame typeSteel trellis
Front susp.KYB USD, 129 mm travel
Rear susp.Swingarm, spring/shock absorber, coil spring/oil damper, 130 mm travel
Dyno chart of 2019 Yamaha R3