The lightweight finely tuned chassis means nimble handling, more control and less rider fatigue. A race-proven, highly developed aluminum semi-double cradle frame is engineered to provide just the right amount of strength and flex for the perfect balance of stability and cornering performance. Removable aluminum rear subframe is constructed of square-section tubing for reduced weight.
Review – Key Features – Features & Benefits – Specifications
2026 Yamaha YZ125: TWO‑STROKE EVOLUTION.
Introducing the new 2026 Yamaha YZ125…
More powerful, more capable, more advanced. Offering the ideal blend of performance, reliability and usability to develop the skills to win.
Some races are won before the gate even drops, and the latest YZ125 gives you the edge to do that. Yamaha has been building and racing 2-stroke motocross bikes for over 50 years and it is this unrivalled experience that has enabled the company to once again further improve the latest YZ125 – making it a bike that is built to take you to the top of the podium.
2026 Yamaha YZ125 Totalmotorcycle.com Key Features
- Revised carburetor setting for more consistent performance in varied conditions.
- Updated CDI settings optimize combustion for more linear power delivery and enhanced rideability.
- Updated air intake and intake boot design yield a more seamless connection and smoother airflow.
- Yamaha’s advanced, liquid-cooled 125cc two-stroke engine provides impressive power and supreme usability.
- Close-ratio six-speed transmission has wider gear tooth width and optimized gear ratios for maximum performance.
- Fully adjustable KYB® shock provides exceptional rear wheel control and class-leading capability.
- Best-in-class Speed Sensitive 48mm KYB® fork includes a leaf spring in the mid-speed valve for unmatched performance.
Powerful Two-Stroke YZ125 Engine
Yamaha’s advanced, liquid-cooled 125cc two-stroke engine is ready for competition straight out of the box with Yamaha’s patented Power Valve System (YPVS) providing impressive acceleration, thrilling mid- to high-rpm power, along with supreme usability.
Lightweight Rider-Friendly Chassis
The lightweight finely tuned chassis means nimble handling, more control and less rider fatigue. A race-proven, highly developed aluminum semi-double cradle frame is engineered to provide just the right amount of strength and flex for the perfect balance of stability and cornering performance. Removable aluminum rear subframe is constructed of square-section tubing for reduced weight.
Premium KYB® Suspension
The YZ125’s renowned suspension performance offers unmatched levels of control, capability and comfort. The class-leading Speed Sensitive System 48mm inverted KYB® fork includes a leaf spring in the mid-speed valve for more precise damping and increased performance. The fully adjustable KYB® rear shock features reduced-friction Kashima Coat internals, separate adjusters for high- and low-speed compression damping, and a full lock oil rebound system for enhanced comfort. It all adds up to class-defining suspension and handling characteristics.
Race-Ready Features
Complete with adjustable aluminum handlebars, water-resistant PVC handle bar pad, wide foot pegs, gripper seat, adjustable clutch lever with works-style cable adjuster and lightweight rear sprocket design, the YZ125 is competition-ready straight out of the crate.
NEW 2026 OFF ROAD COMPETITION RANGE
Off Road Competition is in Yamaha’s DNA – in all its forms, on all levels. The numerous achievements at the highest level of racing speak for themselves, but Yamaha’s commitment goes beyond competitive racing. It’s about sharing the same winning performance with riders on all levels of the sport.
Yamaha’s 2026 Off Road Competition range reflects this philosophy. With genuine racing DNA running through the range, Yamaha have further boosted the race-winning performance and handling of the YZ450F, redesigned the intake system and enhanced carburation of the YZ125, and made the whole range more appealing with updated colours and graphics.
Yamaha is also adding to the line-up four special 70th anniversary models. These bikes with their stunning special livery weave together the rich fabric of Yamaha’s past and present off road race success with the promise of maintaining the fighting spirit that keeps the victories coming in the future.
2026 Yamaha YZ125 Totalmotorcycle.com Features and Benefits
NEW FOR 2026
Updated CDI settings optimize combustion for more linear power delivery and enhanced rideability.
Updated air intake and intake boot design yield a more seamless connection and smoother airflow.
Revised carburetor setting for more consistent performance in varied conditions.
ENGINE
Yamaha’s advanced, liquid-cooled 125cc two-stroke engine provides impressive power and supreme usability.
Patented Yamaha Power Valve System combines crisp bottom-end torque with potent mid-range and free-revving top-end.
High-precision Hitachi Astemo® Keihin PWK38S carburetor provides clean, crisp throttle response and superior rideability.
Digital CDI system delivers precise spark and monitors engine speed to ensure optimal timing for faster, stronger response.
Close-ratio six-speed transmission has wider gear tooth width and optimized gear ratios for maximum performance.
High-capacity radiator with dark louvers deliver maximum cooling efficiency and an aggressive look.
CHASSIS/SUSPENSION
Lightweight finely tuned chassis means nimble handling, more control and less rider fatigue.
Premium Bridgestone® Battlecross X20 tires offer strong cornering grip and race-developed performance.
High performance braking system features a 270mm front and 240mm rear rotors offering exceptional braking power and feel.
Fully adjustable KYB® shock provides exceptional rear wheel control and class-leading capability.
Best-in-class Speed Sensitive 48mm KYB® fork includes a leaf spring in the mid-speed valve for unmatched performance.
Removable aluminum rear subframe is constructed of square-section tubing for reduced weight.
Race-proven aluminum semi-double cradle frame is engineered to provide the perfect balance of strength and flex.
ADDITIONAL FEATURES
Carefully considered ergonomic design includes a flat seat and slim, integrated body panels for greater freedom of movement.
Competition-ready features include two-position adjustable handlebar, wide foot pegs, and works-style cable adjuster.
Premium Yamaha graphics are embedded to provide excellent durability and scratch resistance.
*Manufacturer’s Suggested Retail Price (MSRP) shown. Does not include tax, title, prep or destination charges. Actual prices set by dealer.
**Fuel Economy is estimated.
***Wet weight includes the vehicle with all standard equipment and all fluids, including oil, coolant (as applicable) and a full tank of fuel. It does not include the weight of options or accessories. Wet weight is useful in making real-world comparisons with other models.
2026 Yamaha YZ125 – Totalmotorcycle.com USA Specifications/Technical Details
US MSRP Price: $7,199 USD
Canada MSRP Price: $8,599 CDN
Europe/UK MSRP Price: £7800 GBP (On The Road inc 20% Vat)
ENGINE
| Engine Type | 125cc liquid-cooled 2-stroke; reed-valve inducted |
| Bore x Stroke | 54.0mm x 54.5mm |
| Compression Ratio | 8.2~10.1:1 |
| Fuel Delivery | Hitachi Astemo® Keihin PWK38S carburetor |
| Transmission | Constant-mesh 6-speed; multiplate wet clutch |
| Final Drive | Chain |
| Fuel Capacity | 1.8 gal |
CHASSIS
| Suspension/Front | KYB® Speed-Sensitive System inverted fork; fully adjustable, 11.8-in travel |
| Suspension/Rear | KYB® single shock; fully adjustable, 12.4-in travel |
| Brakes/Front | Hydraulic disc, 270mm |
| Brakes/Rear | Hydraulic disc, 240mm |
| Tires/Front | 80/100-21 Bridgestone® Battlecross X20F |
| Tires/Rear | 100/90-19 Bridgestone® Battlecross X20 |
DIMENSIONS
| LxWxH | 84.1 in x 32.5 in x 51.0 in |
| Seat Height | 38.6 in |
| Wheelbase | 56.9 in |
| Rake (Caster Angle) | 26° |
| Trail | 4.3 in |
| Max. Ground Clearance | 14.4 in |
| Fuel Capacity | 1.8 gal |
| Wet Weight*** | 212 lb |
OTHER
| Warranty | 30 Day (Limited Factory Warranty) |
*Manufacturer’s Suggested Retail Price (MSRP) shown. Does not include tax, title, prep or destination charges. Actual prices set by dealer.
**Fuel Economy is estimated.
***Wet weight includes the vehicle with all standard equipment and all fluids, including oil, coolant (as applicable) and a full tank of fuel. It does not include the weight of options or accessories. Wet weight is useful in making real-world comparisons with other models.
2026 Yamaha YZ125 – Totalmotorcycle.com Canada Specifications/Technical Details
Engine
| Engine | 2-stroke, liquid-cooled, crankcase reed-valve, single |
| Displacement | 125 cc |
| Bore and Stroke | 54.0 x 54.5 mm |
| Compression Ratio | 8.2~10.1:1 |
| Fuel Delivery | Keihin PWK38S carburetor |
| Ignition / Starting | CDI / Kick |
| Transmission | Constant mesh, 6-speed |
| Final Drive | Chain |
Chassis
| Suspension (Front) | Fully adjustable 48 mm inverted fork / 300 mm (11.8″) wheel travel |
| Suspension (Rear) | Fully adjustable link Monocross / 315 mm (12.4″) wheel travel |
| Brakes (Front) | 270 mm floating disc / twin piston caliper |
| Brakes (Rear) | 240 mm disc / single piston caliper |
| Tires (Front) | 80/100-21 Bridgestone® Battlecross X20F |
| Tires (Rear) | 100/90-19 Battlecross X20 |
Critical Data
| Length | 2,135 mm (84.1″) |
| Width | 825 mm (32.5″) |
| Height | 1,295 mm (51″) |
| Wheelbase | 1,445 mm (56.9″) |
| Ground Clearance | 365 mm (14.4″) |
| Seat Height | 980 mm (37.6″) |
| Fuel Capacity | 8 litres (1.8 imp. gal) |
| Wet Weight | 95 kg (209 lb) |
| Colour(s) | Yamaha Racing Blue 70th Anniversary |
2026 Yamaha YZ125 – Totalmotorcycle.com European Specifications/Technical Details
Engine
Engine type Liquid-cooled; 2-stroke; Single cylinder
Displacement 125 cc
Bore x stroke 54.0 x 54.5 mm
Compression ratio 8,2-10,1 : 1
Lubrication system Premix
Clutch type Wet; Multiple Disc
Ignition system CDI
Starter system Kick
Transmission system Constant Mesh; 6-speed
Final transmission Chain
Fuel system Fuel system
Chassis
Frame Semi double cradle
Front suspension system Telescopic Fork
Front travel 300 mm
Rear suspension system link suspension; Swingarm
Rear travel 315 mm
Front brake Hydraulic Single Disc, Ø 270mm
Rear brake Hydraulic Single Disc, Ø 240 mm
Front tyre 80/100-21 51M
Rear tyre 100/90-19 57M
Caster angle 26º
Trail 109 mm
Dimensions
Overall length 2135 mm
Overall width 825 mm
Overall height 1295 mm
Seat height 980 mm
Wheel base 1445 mm
Minimum ground clearance 365 mm
Wet weight (including full oil and fuel tank) 96 kg
Fuel tank capacity 7.0 L
Oil tank capacity n/a
Manufacturer Specifications and appearance are subject to change without prior notice on Total Motorcycle (TMW).
