Yamaha YBR 125
10 hp, 125 cc, 287 lbs2005 - 2016
Kawasaki Z300
39 hp, 296 cc, 375 lbs2015 - 2016
EngineYamaha YBR 125Kawasaki Z300
Displacement125 cc296 cc
Max power10 hp (@7 800 RPM)39 hp (@11 000 RPM)
Max torque6 lb ft (@6 000 RPM)19 lb ft (@10 000 RPM)
Redline10 000 RPM13 000 RPM
Idling speed1 250 RPM1 300 RPM
ManagementFuel InjectionFuel Injection
LayoutSOHC SingleDOHC Inline-2
Compression10.00:110.60:1
Oil capacity1.14 quart2.27 quart
Oil type10W30, 10W4010W40
Spark plug typeNGK CR6HSANGK CR8E
CoolingAirLiquid
Valves28
Bore54.0 mm62.0 mm
Stroke54.0 mm49.0 mm
Throttle bore32.0 mm
Weight to power28.66 lbs/hp9.61 lbs/hp
Power to weight87 hp/2500lbs260 hp/2500lbs
Battery typeYTX7L-BS, 12V 6Ah12V 8Ah
GearboxYamaha YBR 125Kawasaki Z300
TypeSequentialSequential
ClutchWetWet
DriveChainChain
Chain type
Gears count56
Primary ratio3.43.087
Final drive3.0713.0
1. gear2.643 (26 mph)2.714 (38 mph)
2. gear1.778 (39 mph)1.789 (58 mph)
3. gear1.316 (53 mph)1.409 (73 mph)
4. gear1.045 (66 mph)1.16 (89 mph)
5. gear0.875 (79 mph)1.0 (103 mph)
6. gear0.857 (120 mph)
ChasisYamaha YBR 125Kawasaki Z300
Frame typeDiamond steelDiamond steel tube
Front susp.Telescopic fork, 110mm37mm Telescopic fork, 4.72 in travel
Rear susp.Swingarm, 4.13 in travelMonoshock, 5.20 in travel