14 August. Friday 2026
Yamaha YZ125 - 2015 Specifications and Reviews
The 2015 Yamaha YZ125 is a lightweight two-stroke motocrosser designed for amateur and intermediate off-road riders seeking an agile, responsive machine. Known for its sharp handling and nimble maneuverability, this 125cc class bike excels in tight terrain and serves as an ideal progression platform for developing riders transitioning from smaller displacement models.
General information | |
| Category | Cross / motocross |
| Year | 2015 |
| Model | Yamaha YZ125 |
Engine and Transmission Specifications | |
| Transmission type,final drive | Chain |
| Gearbox | 6-speed |
| Cooling system | Liquid |
| Ignition | CDI |
| Fuel system | Carburettor. Mikuni TMX 38 |
| Bore x Stroke | 54.0 x 54.5 mm (2.1 x 2.1 inches) |
| Compression | 8.6:1 |
| Engine details | Reed-valve-inducted |
| Engine type | Single cylinder, two-stroke |
Brakes, suspension, Frame and wheels | |
| Rear brakes diameter | 245 mm (9.6 inches) |
| Rear brakes | Single disc. Hydraulic. |
| Front brakes diameter | 250 mm (9.8 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 | Fully adjustable single shock |
| Front wheel travel | 300 mm (11.8 inches) |
| Front Suspension | Speed-sensitive system inverted fork |
| Rake (fork angle) | 28.0° |
| Frame type | Aluminum |
| | |
Physical measures and capacities | |
| Fuel capacity | 7.95 litres (2.10 gallons) |
| Wheelbase | 1,443 mm (56.8 inches) |
| Ground clearance | 366 mm (14.4 inches) |
| Overall width | 828 mm (32.6 inches) |
| Overall length | 2,136 mm (84.1 inches) |
| Overall height | 1,295 mm (51.0 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 | Electric |
| Color options | Team Yamaha Blue/White |
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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