What category is the 2026 Yamaha YZ125 Monster Energy?

The 2026 Yamaha YZ125 Monster Energy has a Category of Cross / motocross.

What is the engine size of the 2026 Yamaha YZ125 Monster Energy?

The 2026 Yamaha YZ125 Monster Energy has a Capacity: of 125.0 ccm (7.63 cubic inches).

How many gears does the 2026 Yamaha YZ125 Monster Energy have?

The 2026 Yamaha YZ125 Monster Energy has a Gearbox of 6-speed.

Yamaha YZ125 Monster Energy - 2026 Specifications and Reviews

Name: 2026 Yamaha YZ125 Monster Energy
Brand: Yamaha

The 2026 Yamaha YZ125 Monster Energy is a lightweight 125cc two-stroke motocross machine designed for young riders and beginners entering competitive off-road racing. Known for its responsive reed-valve engine, liquid cooling, and nimble handling characteristics, it delivers accessible performance on the track. The 6-speed transmission and wet multiplate clutch provide reliable power delivery for developing riding skills.

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2026

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General information
Color Options	Team Yamaha Blue/green/white
Price	US$ 7299. MSRP depends on country, taxes, accessories, etc.
Category	Cross / motocross
Engine and Transmission Specifications
Starting	Kick
Clutch	Multiplate wet clutch
Final Drive	Chain (final drive)
Gearbox	6-speed
Cooling System	Liquid
Ignition	Digital CDI
Induction	Carburettor. Hitachi AstemoÂ® Keihin PWK38S carburetor
Bore x Stroke	54.0 x 54.5 mm (2.1 x 2.1 inches)
Compression Ratio	10.1:1
Engine Details	Reed-valve-inducted
Engine Type	Single cylinder, two-stroke
Capacity:	125.0 ccm (7.63 cubic inches)

Physical measures and capacities
Fuel Capacity	6.81 litres (1.80 US gallons)
Wheelbase	1445 mm (56.9 inches)
Ground Clearance	366 mm (14.4 inches)
Overall Width	826 mm (32.5 inches)
Overall Length	2136 mm (84.1 inches)
Overall Height	1295 mm (51.0 inches)
Seat Height	980 mm (38.6 inches) If adjustable, lowest setting.
Wet Weight	94.8 kg (209.0 pounds)
Yamaha YZ125 Monster Energy dimensions and frame
Wheels	BridgestoneÂ® Battlecross X20 tires.
Rear Brakes	Single disc. Hydraulic.
Brake Disc Diameter	240 mm (9.4 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	KYBÂ® single shock; fully adjustable
Front Wheel Travel	300 mm (11.8 inches)
Front Suspension	KYBÂ® Speed-Sensitive System inverted fork; fully adjustable
Trail	109 mm (4.3 inches)
Frame	Aluminum semi-double cradle

Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay
Fork tube size	48 mm (1.9 inches)
Tire pressure rear	15 PSI (1 Bar or 100 kPa)
Tire pressure front	15 PSI (1 Bar or 100 kPa)
Spark plugs	NGK BR9EVX, NGK BR9EIX
Brake fluid	DOT 4
Update specs	Report missing specs or required updates.
Warranty	30 Day Limited Factory Warranty
Oil capacity	0.70 litres (0.74 US quarts)
Rake (fork angle)	26.0Â°
Driveline	Constant-mesh
Year of manufacture	2025
Motorcycle name	Yamaha YZ125 Monster Energy

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Feet:

At 980mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with cannot reach comfortably on the 2026 Yamaha YZ125 Monster Energy, 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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