14 August. Friday 2026
Yamaha YZ125 - 2026 Specifications and Reviews
The 2026 Yamaha YZ125 is a lightweight 125cc 2-stroke motocross bike engineered for amateur and intermediate off-road riders. Its agile 212-pound frame and responsive liquid-cooled engine deliver quick acceleration and nimble handling across varied terrain. Known for reliable performance and accessibility, the YZ125 remains an ideal platform for developing competitive riding skills.
Engine and Transmission Specifications | |
| Capacity | 125 cc |
| Final Drive | Chain |
| Gearbox | Constant-mesh 6-speed; multiplate wet clutch |
| Induction | Hitachi Astemo® Keihin PWK38S carburetor |
| Compression Ratio | 8.2~10.1:1 |
| Bore x Stroke | 54.0mm x 54.5mm |
| Engine Type | 125cc liquid-cooled 2-stroke; reed-valve inducted |
Physical measures and capacities | |
| Ground Clearance | 365 mm (14.4´´) |
| Overall Height | 1,295 mm (51´´) |
| Overall Width | 825 mm (32.5´´) |
| Overall Length | 2,135 mm (84.1´´) |
| Wet Weight | 212 lb |
| Wheelbase | 56.9 in |
| Seat Height | 38.6 in |
| Fuel Capacity | 1.8 gal |
Yamaha YZ125 dimensions and frame | |
| Trail | 4.3 in |
| | |
Other specs | |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
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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