What category is the 2003 Yamaha YZ 125?

The 2003 Yamaha YZ 125 has a Category of Cross / motocross.

What is the engine size of the 2003 Yamaha YZ 125?

The 2003 Yamaha YZ 125 has a Capacity: of 124.00 ccm (7.57 cubic inches).

What type of engine does the 2003 Yamaha YZ 125 have?

The 2003 Yamaha YZ 125 has a Engine type of Single cylinder.

Is the 2003 Yamaha YZ 125 air cooled or liquid cooled?

The 2003 Yamaha YZ 125 has a Cooling system of Liquid.

How much does the 2003 Yamaha YZ 125 weigh?

The 2003 Yamaha YZ 125 has a Dry weight of 87.5 kg (192.9 pounds).

What is the seat height of the 2003 Yamaha YZ 125?

The 2003 Yamaha YZ 125 has a Seat height of 994 mm (39.1 inches) If adjustable, lowest setting..

Yamaha YZ 125 - 2003 Specifications and Reviews

Name: 2003 Yamaha YZ 125
Brand: Yamaha

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2003

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General information
Category	Cross / motocross
Model	Yamaha YZ 125
Year	2003
Engine and Transmission Specifications
Cooling system	Liquid
Bore x stroke	54.0 x 54.5 mm (2.1 x 2.1 inches)
Compression	8.7:1
Stroke	2
Engine type	Single cylinder
Capacity:	124.00 ccm (7.57 cubic inches)
Physical measures and capacities
Wheelbase	1,444 mm (56.9 inches)
Ground clearance	400 mm (15.7 inches)
Overall width	827 mm (32.6 inches)
Overall length	2,130 mm (83.9 inches)
Overall height	1,311 mm (51.6 inches)
Seat height	994 mm (39.1 inches) If adjustable, lowest setting.
Dry weight	87.5 kg (192.9 pounds)

Yamaha YZ 125 dimensions and frame
Rear brakes diameter	245 mm (9.6 inches)
Rear brakes	Single disc
Front brakes diameter	250 mm (9.8 inches)
Front brakes	Single disc
Rear tyre dimensions	100/90-19 57M
Front tyre dimensions	80/100-21 51M
Rear suspension travel	315 mm (12.4 inches)
Front suspension travel	300 mm (11.8 inches)
Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay

Performance Profile & Rider Fit

Best For

Track85%

City10%

Cornering90%

Daily Riding10%

Touring5%

Passenger0%

Rider Profile

Best For	This is a competition-focused motocross machine best suited to intermediate and expert off-road riders who understand two-stroke power delivery and clutch management.
Purpose	Built purely for motocross track racing and aggressive off-road riding, not for general transportation.
Rider Fit	Its light dry weight and tall seat height reward an active, standing riding style but demand good fitness, strength, and leg length to control on rough terrain.
Character	A high-strung, peaky, and razor-sharp machine that thrives on revs and rewards precise throttle and clutch control with explosive acceleration out of corners.
Not Ideal For	This bike is not for beginners, commuters, passengers, or anyone seeking comfort, storage, or road-legal touring capability.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2003 Yamaha YZ 125 Rider Ergonomics Assessment

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Inseam (optional)

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Feet:

At 994mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2003 Yamaha YZ 125, 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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