Yamaha YBR 125
10 hp, 125 cc, 287 lbs2005 - 2016
Kawasaki Z1000
140 hp, 1043 cc, 487 lbs2014 - 2018
EngineYamaha YBR 125Kawasaki Z1000
Displacement125 cc1043 cc
Max power10 hp (@7 800 RPM)140 hp (@10 000 RPM)
Max torque6 lb ft (@6 000 RPM)81 lb ft (@7 300 RPM)
Redline10 000 RPM11 200 RPM
Idling speed1 250 RPM1 200 RPM
ManagementFuel InjectionFuel Injection
LayoutSOHC SingleDOHC Inline-4
Compression10.00:111.80:1
Oil capacity1.14 quart3.79 quart
Oil type10W30, 10W40SAE 10W40
Spark plug typeNGK CR6HSANGK CR9EIA-9
CoolingAirLiquid
Valves216
Bore54.0 mm77.0 mm
Stroke54.0 mm56.0 mm
Throttle bore38.0 mm
Weight to power28.66 lbs/hp3.48 lbs/hp
Power to weight87 hp/2500lbs718 hp/2500lbs
Battery typeYTX7L-BS, 12V 6Ah12V 10Ah
GearboxYamaha YBR 125Kawasaki Z1000
TypeSequentialSequential
ClutchWetWet
DriveChainChain
Chain type
Gears count56
Primary ratio3.41.627
Final drive3.0712.867
1. gear2.643 (26 mph)2.6 (67 mph)
2. gear1.778 (39 mph)1.95 (89 mph)
3. gear1.316 (53 mph)1.6 (109 mph)
4. gear1.045 (66 mph)1.389 (126 mph)
5. gear0.875 (79 mph)1.238 (141 mph)
6. gear1.107 (158 mph)
ChasisYamaha YBR 125Kawasaki Z1000
Frame typeDiamond steelAluminum twin-spar
Front susp.Telescopic fork, 110mmShowa 41mm USD, 4.72 in travel
Rear susp.Swingarm, 4.13 in travelMonoshock, 5.39 in travel