14 August. Friday 2026
Yamaha YZ125 - 2023 Specifications and Reviews
The 2023 Yamaha YZ125 is a lightweight two-stroke motocross bike designed for young and amateur riders seeking an affordable entry point into competitive racing. Known for its responsive power delivery and nimble handling, the liquid-cooled 125cc engine provides an ideal balance of performance and control for developing riders building fundamental skills.
General information | |
| Category | Cross / motocross |
| Year | 2023 |
| Model | Yamaha YZ125 |
| | |
Engine and Transmission Specifications | |
| Driveline | Constant-mesh |
| Clutch | Multiplate wet clutch |
| Transmission type | Chain (final drive) |
| Gearbox | 6-speed |
| Cooling system | Liquid |
| Lubrication system | Premix |
| Ignition | Digital CDI |
| Fuel system | Carburettor. Hitachi Astemo® Keihin PWK38S carburetor |
| Bore x Stroke | 54.0 x 54.5 mm (2.1 x 2.1 inches) |
| Compression | 10.1:1 |
| 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 | Bridgestone® Battlecross X20 tires. |
| 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 | Aluminum semi-double cradle |
Physical measures and capacities | |
| Oil capacity | 0.70 litres (0.74 US quarts) |
| 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. |
| 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 | Team Yamaha Blue |
Maintenance and service data | |
| 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 |
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.
Shop This Bike
Rider Reviews
Total comments: 1
MotorcycleDB Review
The 2023 Yamaha YZ125 is an impressive dirt bike with powerful performance and excellent handling. Its 125cc engine delivers strong acceleration and top-end power, making it a competitive choice for motocross racing or off-road riding. The bike's lightweight chassis and smooth suspension provide agile handling and precise control, allowing riders to tackle rough terrain with confidence. With its stylish design and reliable build quality, the YZ125 is a fantastic option for anyone seeking a high-performance dirt bike. In addition to its impressive performance, the 2023 Yamaha YZ125 boasts a range of features that make it a top choice for off-road enthusiasts. The bike's ergonomic design and comfortable seating position ensure a pleasant riding experience, while its durable construction and robust components guarantee long-lasting reliability. Whether you're a seasoned rider or a beginner looking to get into motocross, the YZ125's combination of power, handling, and quality make it an excellent option for anyone in the market for a high-performance dirt bike.Add a Comment
Related Motorcycle Specifications
More Yamaha Motorcycles
- Motorcycles in database: 45863
- Technical specifications: 1490298
- Images of motorcycles: 72681
- Videos: 339
- Manufacturers: 501
Please Login or Register if you would like to leave a comment.