What category is the 2017 Yamaha YZ125?

The 2017 Yamaha YZ125 has a Category of Cross / motocross.

What is the engine size of the 2017 Yamaha YZ125?

The 2017 Yamaha YZ125 has a Capacity: of 124.00 ccm (7.57 cubic inches).

What type of engine does the 2017 Yamaha YZ125 have?

The 2017 Yamaha YZ125 has a Engine type of Single cylinder, two-stroke.

Is the 2017 Yamaha YZ125 air cooled or liquid cooled?

The 2017 Yamaha YZ125 has a Cooling system of Liquid.

How many gears does the 2017 Yamaha YZ125 have?

The 2017 Yamaha YZ125 has a Gearbox of 6-speed.

How much does the 2017 Yamaha YZ125 weigh?

The 2017 Yamaha YZ125 has a Weight incl. oil, gas, etc of 94.8 kg (209.0 pounds).

What is the seat height of the 2017 Yamaha YZ125?

The 2017 Yamaha YZ125 has a Seat height of 975 mm (38.4 inches) If adjustable, lowest setting..

Yamaha YZ125 - 2017 Specifications and Reviews

Name: 2017 Yamaha YZ125
Brand: Yamaha

The 2017 Yamaha YZ125 is a lightweight 124cc two-stroke motocross machine designed for junior and intermediate riders transitioning through competitive racing classes. Known for its responsive power delivery and agile handling, the liquid-cooled single-cylinder delivers thrilling performance in a highly maneuverable package ideal for both track work and training.

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General information
Category	Cross / motocross
Year	2017
Model	Yamaha YZ125

Engine and Transmission Specifications
Transmission type,final drive	Chain
Gearbox	6-speed
Cooling system	Liquid
Lubrication system	Premix
Ignition	CDI
Fuel system	Carburettor. Mikuni TMX 38
Bore x Stroke	54.0 x 54.5 mm (2.1 x 2.1 inches)
Compression	10.7:1
Engine details	Reed-valve-inducted
Engine type	Single cylinder, two-stroke
Capacity:	124.00 ccm (7.57 cubic inches)
Brakes, suspension, Frame and wheels
Rear brakes diameter	245 mm (9.6 inches)
Rear brakes	Single disc. Hydraulic.
Front brakes diameter	250 mm (9.8 inches)
Front brakes	Single disc. Hydraulic.
Rear tyre	100/90-19
Front tyre	80/100-21
Rear wheel travel	315 mm (12.4 inches)
Rear Suspension	Fully adjustable single shock
Front wheel travel	300 mm (11.8 inches)
Front Suspension	Speed-sensitive system inverted fork
Trail	109 mm (4.3 inches)
Rake (fork angle)	26.0°
Frame type	Semi-double cradle aluminium frame
Physical measures and capacities
Oil capacity	0.70 litres (0.05 quarts)
Fuel capacity	8.00 litres (2.11 gallons)
Wheelbase	1,443 mm (56.8 inches)
Ground clearance	366 mm (14.4 inches)
Overall width	828 mm (32.6 inches)
Overall length	2,136 mm (84.1 inches)
Overall height	1,295 mm (51.0 inches)
Seat height	975 mm (38.4 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc	94.8 kg (209.0 pounds)
Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay
Factory warranty	30 Day Limited Factory Warranty
Starter	Kick
Color options	Blue/White

Performance Profile & Rider Fit

Best For

Track85%

City5%

Cornering90%

Daily Riding5%

Touring5%

Passenger0%

Rider Profile

Best For	This is a full-on competition motocross bike best suited to intermediate through expert off-road riders who understand 2-stroke power delivery and clutch management.
Purpose	Built purely for motocross racing and aggressive trail riding, not for commuting, road use, or casual leisure riding.
Rider Fit	The tall 38.6-inch seat height, light 212 lb wet weight, and peaky 2-stroke power demand an active, fit rider comfortable standing and shifting body weight constantly.
Character	A raw, high-revving 2-stroke racer that rewards precise clutch and throttle control with explosive acceleration and razor-sharp handling on dirt.
Not Ideal For	Not for beginners, road riders, passengers, or anyone wanting comfort, storage, or long-distance capability.

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

Rider Fit Visualizer

2017 Yamaha YZ125 Rider Ergonomics Assessment

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Feet:

At 975mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2017 Yamaha YZ125, with a cramped knee angle of around 85 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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Rider Reviews

Total comments: 1

MotorcycleDB Review

The 2017 Yamaha YZ125 motorcycle is a powerhouse on the track, offering top-notch performance and agile handling. Its 125cc engine delivers impressive power and torque, making it a force to be reckoned with in motocross competitions. The lightweight chassis and suspension setup allow for precise control and maneuverability, giving riders the confidence to push their limits. With its sleek design and advanced technology, the YZ125 is a top choice for riders looking for a high-performing, reliable machine. Overall, the 2017 Yamaha YZ125 motorcycle is a standout in its category, offering exceptional performance and handling for motocross enthusiasts. Its powerful 125cc engine, lightweight chassis, and advanced suspension make it a force to be reckoned with on the track. Whether you're an experienced rider or just starting out, the YZ125 is sure to impress with its top-notch performance and reliability.