Yamaha YZ125 - 2008 Specifications and Reviews

The 2008 Yamaha YZ125 is a lightweight 124cc motocross bike designed for intermediate to advanced riders seeking competitive performance on the track. Known for its responsive liquid-cooled engine and agile handling, it delivers the power and control needed for racing while remaining manageable for experienced enthusiasts. Its compact dimensions and 86kg weight make it ideal for technical terrain and jumping.

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General information

CategoryCross / motocross
Year2008
ModelYamaha YZ125
 
 

Engine and Transmission Specifications

Transmission typefinal driveChain
Gearbox6-speed
Cooling systemLiquid
Bore x stroke54.0 x 54.5 mm (2.1 x 2.1 inches)
Compression8.6:1
Stroke4
Engine typeSingle cylinder
Capacity:124.00 ccm (7.57 cubic inches)
 
 

Physical measures and capacities

Wheelbase1,443 mm (56.8 inches)
Ground clearance386 mm (15.2 inches)
Overall width828 mm (32.6 inches)
Overall length2,136 mm (84.1 inches)
Overall height1,316 mm (51.8 inches)
Seat height998 mm (39.3 inches) If adjustable, lowest setting.
Dry weight86.2 kg (190.0 pounds)

Yamaha YZ125 dimensions and frame

Rear brakes diameter245 mm (9.6 inches)
Rear brakesSingle disc
Front brakes diameter250 mm (9.8 inches)
Front brakesSingle disc
Rear tyre dimensions100/90-M19
Front tyre dimensions80/80-M21
Rear suspension travel315 mm (12.4 inches)
Rear suspensionFully adjustable single shock
Front suspension travel300 mm (11.8 inches)
Front suspensionSpeed-sensitive system inverted fork
Rake (fork angle)26.0°

Speed and acceleration

Color optionsBlue/white
Fuel capacity7.94 litres (2.10 gallons)

Other specs

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Rider Fit Visualizer

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Feet:

At 998mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with cannot reach comfortably on the 2008 Yamaha YZ125, with a moderate knee angle of around 90 degrees and an upright riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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