14 August. Friday 2026
Yamaha YZ125X - 2020 Specifications and Reviews
The 2020 Yamaha YZ125X is a lightweight two-stroke enduro bike designed for beginning and intermediate off-road riders seeking affordable trail performance. Its responsive 125cc reed-valve engine delivers snappy power delivery ideal for learning techniques, while the compact chassis ensures easy handling on technical terrain. Known for reliability and low maintenance costs, it remains a popular choice for riders transitioning into competitive enduro racing.
General information | |
| Price as new | Do you know this bike?Click here to rate it. We miss 1 vote to show the rating. |
| Category | Enduro / offroad |
| Year | 2020 |
| Model | Yamaha YZ125X |
| | |
Engine and Transmission Specifications | |
| Clutch | O-ring chain |
| 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 | 8.8:1 |
| Engine details | Reed-valve-inducted |
| Engine type | Single cylinder, two-stroke |
| Capacity: | 125.0 ccm (7.63 cubic inches) |
Brakes, suspension, Frame and wheels | |
| Rear brakes | Single disc. Hydraulic. |
| Diameter | 270 mm (10.6 inches) |
| Front brakes | Single disc. Hydraulic. |
| Rear tire | 110/90-18 |
| Front tire | 90/90-21 |
| 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 | 117 mm (4.6 inches) |
| Rake (fork angle) | 26.8° |
| 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 | 1455 mm (57.3 inches) |
| Ground clearance | 351 mm (13.8 inches) |
| Overall width | 825 mm (32.5 inches) |
| Overall length | 2141 mm (84.3 inches) |
| Overall height | 1285 mm (50.6 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 | Yamaha Blue |
Performance Profile & Rider Fit
Best For
Track55%
City10%
Cornering85%
Daily Riding10%
Touring10%
Passenger5%
Rider Profile
| Best For | Best suited to intermediate-to-advanced off-road riders who understand 2-stroke power delivery and clutch management. |
| Purpose | Built as a cross-country/off-road competition machine, essentially a trail-tuned YZ125 motocrosser with wider-ratio gearing and off-road suspension settings. |
| Rider Fit | Very light wet weight and tall seat height demand an active, fit rider comfortable standing and shifting body weight through rough terrain. |
| Character | Raw, high-strung, and reward-driven, this bike delivers sharp, punchy 2-stroke power and razor-sharp agility for riders who like to work the bike hard. |
| Not Ideal For | Not for riders seeking comfort, highway capability, passenger accommodation, or a low-maintenance, easy-going ride. |
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 YZ125X is a top-notch off-road motorcycle that delivers powerful performance and superior handling. With its 125cc two-stroke engine, this bike offers excellent acceleration and responsiveness, making it well-suited for challenging trails and tight corners. The lightweight chassis and nimble handling make it a breeze to maneuver, while the advanced suspension system ensures a smooth and controlled ride over rough terrain. Riders will also appreciate the comfortable ergonomics and durable construction that make the YZ125X a reliable choice for off-road adventures. For off-road enthusiasts looking for a high-performance and agile motorcycle, the 2020 Yamaha YZ125X is a top contender. Its powerful 125cc two-stroke engine and lightweight chassis provide excellent acceleration and nimble handling, making it a standout choice for tackling challenging trails and tight corners. With advanced suspension and durable construction, this bike offers a smooth and controlled ride over rough terrain, while its comfortable ergonomics make it a reliable option for off-road adventures. Overall, the YZ125X is a top-notch off-road motorcycle that delivers superior performance and handling for riders who crave excitement on the trail.Add a Comment
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