2020 Yamaha YZ125X

New 125cc two-stroke off-road motorcycle joins the YZ lineup for 2020.

YZ125X Front Right
2020 Yamaha YZ125XYamaha

The Yamaha YZ125X is a new addition to the tuning-fork brand’s lineup for 2020. This off-road-only motorcycle shares many of its major components with the YZ125 motocrosser, but features noteworthy changes to the engine and chassis that make it more suitable for cross-country riding. The KYB Speed-Sensitive System (SSS) coil-spring fork and KYB shock, for example, are relatively softly sprung and lightly damped, but they can be easily adjusted to suit a 160-pound intermediate-plus rider.

Tester Allan Brown was thoroughly impressed with the YZ125X as a whole and, in particular, its powerplant. “The engine runs clean and is one of the smoothest 125s I have ever ridden,” he wrote. “It builds power well from the midrange all the way to very high rpm. While it is normal to shift gears more often on a 125cc two-stroke, with this engine and its six-speed close-ratio gearbox, the YZ125X required much less shifting than I expected.”

YZ125X Right Side
2020 Yamaha YZ125XYamaha

In fact, with its tried-and-true chassis and responsive engine, the YZ125X is an exceptionally easy bike to ride, and its light weight makes it ridiculously easy to steer around trees and other obstacles on a tight single-track trail.

2020 Yamaha YZ125X Reviews, Comparisons, And Competition

YZ125X Rear Left
2020 Yamaha YZ125XYamaha

Manufacturer Claimed Specifications

Price $6,699
Engine Liquid-cooled, two-stroke, single-cylinder
Displacement 125cc
Bore x Stroke 54.0mm x 54.5mm
Horsepower N/A
Torque N/A
Transmission 6-speed
Final Drive Chain
Seat Height 37.6 in.
Rake 26.8°
Trail 4.6 in.
Front Suspension 48mm fully adjustable; 11.8-in. travel
Rear Suspension Fully adjustable; 12.4-in. travel
Front Tire 90/90-21
Rear Tire 110/90-18
Wheelbase 57.3 in.
Fuel Capacity 2.1 gal.
Claimed Wet Weight 209 lb.

Cycle World Tested Specifications

Seat Height N/A
Dry Weight N/A
Rear-Wheel Horsepower N/A
Rear-Wheel Torque N/A
0–60 mph N/A
1/4-mile N/A
Braking 30–0 mph N/A
Braking 60–0 mph N/A