What category is the 2011 Yamaha YZ125?

The 2011 Yamaha YZ125 has a Category of Cross / motocross.

What is the engine size of the 2011 Yamaha YZ125?

The 2011 Yamaha YZ125 has a Capacity: of 124.00 ccm (7.57 cubic inches).

What type of engine does the 2011 Yamaha YZ125 have?

The 2011 Yamaha YZ125 has a Engine type of Single cylinder, two-stroke.

Is the 2011 Yamaha YZ125 air cooled or liquid cooled?

The 2011 Yamaha YZ125 has a Cooling system of Liquid.

How many gears does the 2011 Yamaha YZ125 have?

The 2011 Yamaha YZ125 has a Gearbox of 6-speed.

How much does the 2011 Yamaha YZ125 weigh?

The 2011 Yamaha YZ125 has a Weight incl. oil, gas, etc of 94.4 kg (208.0 pounds).

What is the seat height of the 2011 Yamaha YZ125?

The 2011 Yamaha YZ125 has a Seat height of 998 mm (39.3 inches) If adjustable, lowest setting..

Yamaha YZ125 - 2011 Specifications and Reviews

Name: 2011 Yamaha YZ125
Brand: Yamaha

The 2011 Yamaha YZ125 is a lightweight two-stroke motocross bike designed for intermediate and amateur racers. Known for its responsive handling and aggressive power delivery, the liquid-cooled single-cylinder engine provides punchy performance ideal for competitive riding. Its aluminum frame and advanced suspension geometry make it a competitive choice in the 125cc motocross class.

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2011

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General information
Category	Cross / motocross
Year	2011
Model	Yamaha YZ125
Engine and Transmission Specifications
Transmission type,final drive	Chain
Gearbox	6-speed
Cooling system	Liquid
Lubrication system	Dry sump
Ignition	CDI
Fuel system	Carburettor. Mikuni TMX 38
Bore x stroke	54.0 x 54.5 mm (2.1 x 2.1 inches)
Compression	8.6:1
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. Wave
Front brakes diameter	250 mm (9.8 inches)
Front brakes	Single disc. Wave
Rear tyre dimensions	100/90-M19
Front tyre dimensions	80/100-M21
Rear suspension travel	315 mm (12.4 inches)
Rear suspension	Fully adjustable single shock
Front suspension travel	300 mm (11.8 inches)
Front suspension	Speed-sensitive system inverted fork
Frame type	Aluminium

Physical measures and capacities
Oil capacity	0.70 litres (0.05 quarts)
Fuel capacity	7.95 litres (2.10 gallons)
Wheelbase	1,443 mm (56.8 inches)
Ground clearance	386 mm (15.2 inches)
Overall width	828 mm (32.6 inches)
Overall length	2,136 mm (84.1 inches)
Overall height	1,316 mm (51.8 inches)
Seat height	998 mm (39.3 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc	94.4 kg (208.0 pounds)
Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay
Color options	Team Yamaha Blue/White
Factory warranty	30 Day (Limited Factory Warranty)

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

2011 Yamaha YZ125 Rider Ergonomics Assessment

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Inseam (optional)

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Feet:

At 998mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2011 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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