14 August. Friday 2026
Yamaha YZ125 - 2020 Specifications and Reviews
The 2020 Yamaha YZ125 is a lightweight two-stroke motocross bike engineered for younger riders and beginners entering competitive off-road racing. Powered by a liquid-cooled 125cc reed-valve engine with aggressive power delivery, it delivers sharp acceleration and nimble handling across varied terrain. Known for its reliability and affordable entry point into the YZ lineup, the YZ125 remains a popular choice for amateur motocross competition.
General information | |
| Price as new | 3.7 Check out the detailed rating of off-road capabilities, engine performance, maintenance cost, etc. Compare with any other bike. |
| Category | Cross / motocross |
| Year | 2020 |
| Model | Yamaha YZ125 |
Engine and Transmission Specifications | |
| Clutch | Multiplate wet clutch |
| Transmission type | Chain (final drive) |
| 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: | 125.0 ccm (7.63 cubic inches) |
| | |
Brakes, suspension, Frame and wheels | |
| Wheels | Dunlop® MX52 |
| Rear brakes | Single disc. Hydraulic. |
| Diameter | 270 mm (10.6 inches) |
| Front brakes | Single disc. Hydraulic. |
| Rear tire | 100/90-19 |
| Front tire | 80/100-21 |
| Rear wheel travel | 315 mm (12.4 inches) |
| Rear Suspension | KYB® single shock; fully adjustable |
| Front wheel travel | 300 mm (11.8 inches) |
| Front Suspension | KYB® Speed-Sensitive System inverted fork; fully adjustable |
| 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 (0.74 US quarts) |
| Fuel capacity | 8.00 litres (2.11 US gallons) |
| Wheelbase | 1443 mm (56.8 inches) |
| Ground clearance | 366 mm (14.4 inches) |
| Overall width | 828 mm (32.6 inches) |
| Overall length | 2136 mm (84.1 inches) |
| Overall height | 1295 mm (51.0 inches) |
| Seat height | 975 mm (38.4 inches) If adjustable, lowest setting. |
| Weight incl. oil, gas, etc | 93.9 kg (207.0 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 | Team Yamaha Blue |
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.
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Rider Reviews
Total comments: 1
MotorcycleDB Review
The 2020 Yamaha YZ125 is a powerful and agile motocross bike that is perfect for riders of all skill levels. With its lightweight frame and responsive handling, the YZ125 offers a thrilling riding experience both on the track and in the trails. The 125cc 2-stroke engine delivers impressive power and torque, allowing riders to tackle challenging terrain with confidence. Additionally, the YZ125 features a comfortable and ergonomic design that provides excellent control and maneuverability, making it a top choice for riders looking for a competitive edge. Overall, the 2020 Yamaha YZ125 is a top-notch motocross bike that offers a winning combination of power, performance, and agility. Whether you're a seasoned rider or just starting out, the YZ125 is sure to impress with its impressive capabilities on the track and in the trails. With its responsive handling and powerful engine, this bike is a must-have for any motocross enthusiast looking for a high-performance ride.Add a Comment
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