Yamaha R125
15 hp, 124 cc, 142 kg2019
BMW R 1200 R
125 hp, 1170 cc, 231 kg2016
MetricUS
EngineYamaha R125BMW R 1200 R
Displacement124 cc1170 cc
Max power15 hp (@10 000 RPM)125 hp (@7 750 RPM)
Max torque11 Nm (@8 000 RPM)125 Nm (@6 500 RPM)
Redline10 000 RPM9 000 RPM
Idling speed1 200 RPM1 200 RPM
ManagementFuel InjectionFuel Injection
LayoutSOHC SingleDOHC Flat-2
Compression11.20:112.50:1
Oil capacity1.20 litre4.00 litre
Oil type5W40, Advantec Ultimate 5W40,
Spark plug typeNGK LMAR8D-J
CoolingLiquidLiquid
Valves48
Bore52.0 mm101.0 mm
Stroke58.6 mm73.0 mm
Throttle bore52.0 mm
Weight to power9.47 kg/hp1.85 kg/hp
Power to weight105 hp/Ton541 hp/Ton
Battery type12V 5.5AhAGM 12V 12Ah
GearboxYamaha R125BMW R 1200 R
TypeSequentialSequential
ClutchWetWet
DriveChainShaft
Chain type
Gears count66
Primary ratio3.0421.65
Final drive3.422.818
1. gear2.833 (39 km/h)2.438 (94 km/h)
2. gear1.875 (59 km/h)1.714 (134 km/h)
3. gear1.364 (82 km/h)1.296 (177 km/h)
4. gear1.143 (97 km/h)1.059 (217 km/h)
5. gear0.957 (116 km/h)0.943 (244 km/h)
6. gear0.84 (132 km/h)0.848 (271 km/h)
ChasisYamaha R125BMW R 1200 R
Frame typeSteel deltaboxTubular steel frame
Front susp.KYB 41mm USD, 130.00 mm travel45mm USD fork, 140.00 mm travel
Rear susp.Swingarm monoshock, 114.00 mm travelSingle-sided aluminium paralever swingarm, 140.00 mm travel