Yamaha YBR 125
10 hp, 125 cc, 287 lbs2005 - 2016
MV Agusta F4 RR
201 hp, 998 cc2016
EngineYamaha YBR 125MV Agusta F4 RR
Displacement125 cc998 cc
Max power10 hp (@7 800 RPM)201 hp (@13 600 RPM)
Max torque6 lb ft (@6 000 RPM)81 lb ft (@9 600 RPM)
Redline10 000 RPM14 000 RPM
Idling speed1 250 RPM1 200 RPM
ManagementFuel InjectionFuel Injection
LayoutSOHC SingleDOHC Inline-4
Compression10.00:113.40:1
Oil capacity1.14 quart
Oil type10W30, 10W40
Spark plug typeNGK CR6HSA
CoolingAirLiquid
Valves216
Bore54.0 mm79.0 mm
Stroke54.0 mm50.9 mm
Throttle bore50.0 mm
Weight to power28.66 lbs/hp
Power to weight87 hp/2500lbs
Battery typeYTX7L-BS, 12V 6Ah12V - 8.6 Ah
GearboxYamaha YBR 125MV Agusta F4 RR
TypeSequentialSequential
ClutchWetWet
DriveChainChain
Chain typeRegina-ZRP 525 Pitch x 108
Gears count56
Primary ratio3.41.708
Final drive3.0712.734
1. gear2.643 (26 mph)2.642 (86 mph)
2. gear1.778 (39 mph)2.062 (111 mph)
3. gear1.316 (53 mph)1.722 (133 mph)
4. gear1.045 (66 mph)1.5 (153 mph)
5. gear0.875 (79 mph)1.318 (173 mph)
6. gear1.19 (193 mph)
ChasisYamaha YBR 125MV Agusta F4 RR
Frame typeDiamond steelCrMo Steel tubular trellis
Front susp.Telescopic fork, 110mmÖhlins EC Nix USD, 43mm dia, 4.72 in travel
Rear susp.Swingarm, 4.13 in travel Öhlins progressive, TTX, Single sided swing arm, 4.72 in travel