Positioned in Yamaha's naked motorcycle lineup, the 2010 Yamaha YBR 125 utilizes a 124 cc (7.6 cu in) air-cooled single cylinder, four-stroke layout. In factory specification, peak output is rated at 10.1 HP (7.3 kW) at 10,000 rpm while maximum torque reaches 9.6 Nm (7.1 lb-ft), transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 81.5 HP per liter, the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.
On the scales, the YBR 125 measures 124 kg (273 lbs) wet (curb), translating to a power-to-weight ratio of 0.08 HP/kg (12.28 kg per horsepower). Rider ergonomics and chassis geometry center around a 780 mm (30.7 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,290 mm (50.8 in) wheelbase engineered for quick, flickable steering geometry. The 13-liter (3.4 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Yamaha archive, this model family spans 4 indexed model years from 2005 to 2010, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
81.5 HP/L
Power-to-Weight
0.08 HP/kg (12.28 kg/HP)
Standover Height
780 mm (30.7 in)
Engine
Displacement124.0 ccm (7.57 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Power10.1 HP (7.3 kW)) @ 10000 RPM
Torque9.6 Nm (1.0 kgf-m or 7.1 ft.lbs)
Compression10.0:1
Bore x Stroke54.0 x 54.0 mm (2.1 x 2.1 inches)
Fuel SystemInjection
Fuel ControlSingle Overhead Cams (SOHC)
IgnitionTCI
LubricationWet sump
CoolingAir
Transmission
Gearbox5-speed
Final DriveChain (final drive)
ClutchWet, multiple disc
Chassis
Frame TypeDiamond shaped
Trail90 mm (3.5 inches)
Front SuspensionTelescopic forks
Front Travel120 mm (4.7 inches)
Rear SuspensionSwingarm
Rear Travel105 mm (4.1 inches)
Wheelbase1290 mm (50.8 inches)
Ground Clearance175 mm (6.9 inches)
Wheels & Brakes
Front Tyre-.42
Rear Tyre90/90-M18
Front BrakesSingle disc
Front Brake Ø245 mm (9.6 inches)
Rear BrakesExpanding brake (drum brake)
Rear Brake Ø130 mm (5.1 inches)
Dimensions & Weight
Weight incl.124.0 kg (273.4 pounds)
Seat Height780 mm (30.7 inches) If adjustable, lowest setting.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
