Yamaha YBR 125
10 hp, 125 cc, 287 lbs2005 - 2016
KTM 690 Duke R
72 hp, 692 cc2016
EngineYamaha YBR 125KTM 690 Duke R
Displacement125 cc692 cc
Max power10 hp (@7 800 RPM)72 hp (@8 200 RPM)
Max torque6 lb ft (@6 000 RPM)54 lb ft (@6 500 RPM)
Redline10 000 RPM9 000 RPM
Idling speed1 250 RPM1 550 RPM
ManagementFuel InjectionFuel Injection
LayoutSOHC SingleDOHC Single
Compression10.00:112.70:1
Oil capacity1.14 quart
Oil type10W30, 10W4010W50, Liqui Moly 10W50, Motul 10W50
Spark plug typeNGK CR6HSAinside, NGK LKAR9BI‐10, outside, NGK LMAR7DI‐10
CoolingAirLiquid
Valves24
Bore54.0 mm105.0 mm
Stroke54.0 mm80.0 mm
Throttle bore55.0 mm
Weight to power28.66 lbs/hp
Power to weight87 hp/2500lbs
Battery typeYTX7L-BS, 12V 6Ah
GearboxYamaha YBR 125KTM 690 Duke R
TypeSequentialSequential
ClutchWetWet
DriveChainChain
Chain type5/8 x 1/4” (520) X‐ring
Gears count56
Primary ratio3.42.194
Final drive3.0712.5
1. gear2.643 (26 mph)2.5 (48 mph)
2. gear1.778 (39 mph)1.75 (68 mph)
3. gear1.316 (53 mph)1.333 (90 mph)
4. gear1.045 (66 mph)1.095 (109 mph)
5. gear0.875 (79 mph)0.956 (125 mph)
6. gear0.869 (138 mph)
ChasisYamaha YBR 125KTM 690 Duke R
Frame typeDiamond steelLattice frame made of chrome molybdenum steel tubing, powder- coated
Front susp.Telescopic fork, 110mmUSD FORK 4357 ROTA SPLIT
Rear susp.Swingarm, 4.13 in travel Pro‐Lever linkage