Kawasaki ZX-25R
45 hp, 249 cc2020
Yamaha R6
123 hp, 599 cc, 189 kg2015 - 2016
MetricUS
EngineKawasaki ZX-25RYamaha R6
Displacement249 cc599 cc
Max power45 hp (@12 000 RPM)123 hp (@14 500 RPM)
Max torque33 Nm (@9 000 RPM)65 Nm (@10 500 RPM)
Redline17 000 RPM16 000 RPM
Idling speed1 200 RPM1 200 RPM
ManagementFuel InjectionFuel Injection
LayoutDOHC Inline-4DOHC Inline-4
Compression13.10:1
Oil capacity3.40 litre
Oil type10W40, Yamalube 10W40, Shell Rotella 10W40
Spark plug typeNGK CR10EK
CoolingLiquidLiquid
Valves16
Bore67.0 mm
Stroke42.5 mm
Weight to power1.54 kg/hp
Power to weight650 hp/Ton
Battery typeYTZ10S
GearboxKawasaki ZX-25RYamaha R6
TypeSequentialSequential
ClutchWetWet
DriveChainChain
Chain type
Gears count06
Primary ratio2.073
Final drive2.813
1. gear2.583 (126 km/h)
2. gear2.0 (163 km/h)
3. gear1.667 (195 km/h)
4. gear1.444 (226 km/h)
5. gear1.286 (253 km/h)
6. gear1.15 (283 km/h)
ChasisKawasaki ZX-25RYamaha R6
Frame typeAluminium Deltabox
Front susp.USD, dia 41mm, 115.00 mm travel
Rear susp.120.00 mm travel