Review – Key Features – Features & Benefits – Specifications
2024 Yamaha YZ125: THE IDEAL BLEND.
Introducing the new 2024 Yamaha YZ125…
A pure motocross machine, the competition-ready YZ125 is the perfect choice for riders stepping up from the 85cc class. Offering the ideal blend of performance, reliability, and usability to develop the skills to win.
The winning combination of a lightweight chassis with ultra-slim ergonomic bodywork and the best-in-class KYB suspension work together to create one of the most agile motocross bikes you’ll ever experience. And with its Anniversary white colour, purple/pink graphics, purple seat and black wheels, the YZ125 50th Anniversary Edition gives you total exclusivity with winning performance.
TWO‑STROKE EVOLUTION
More powerful, more capable, more advanced. Offering the ideal blend of performance, reliability and usability to develop the skills to win.
Powerful Two-Stroke YZ125 Engine
Yamaha’s advanced, liquid-cooled 125cc two-stroke engine provides impressive acceleration, thrilling mid- to high-rpm power, along with supreme usability.
AGGRESSIVE YZ STYLING
Aggressive bodywork including slim body panels and blacked-out radiator shrouds integrate with a bold graphics scheme to highlight the YZ’s unmatched racing pedigree. Premium Yamaha Blue and dark blue graphics are embedded to provide excellent durability and scratch resistance.
PERFECT FOR ASPIRING MOTOCROSSERS
A pure motocross machine, the light, nimble, competition-ready YZ125 is the perfect choice for riders stepping up from the 85cc class.
2024 Yamaha YZ125 Totalmotorcycle.com Key Features
- Liquid-cooled Yamaha Power Valve System (YPVS)-equipped 125cc two-stroke engine
- Throttle position sensor and 3D-map-controlled CDI unit resulting in crisp throttle response and superior rideability
- Straight intake design improves feeling of power in the low rpm range
- High performance front and rear brake setup offers exceptional braking power and feel, while reducing unsprung weight
- Ergonomically designed with a flat seat, narrow fuel tank, smoothly integrated body panels and slim shroud width to enable greater freedom of movement forward and back.
Class-leading two-stroke performance wrapped in iconic heritage YZ style.
Completely redesigned in 2022, Yamaha’s advanced, liquid-cooled 125cc two-stroke engine provides impressive acceleration, thrilling mid- to high-rpm power, along with supreme usability.
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.
50 years of winning. 50 years of innovation. 50 years of YZ.
Yamaha was born to race. Right from day one Yamaha put competition at the heart of its operations. And 50 years ago, Yamaha launched its first YZ production motocross models – the same year that the company won its first ever Motocross World Championship with Hakan Andersson on a factory YZM250. It was the beginning of a new era for the sport, and over the last half century Yamaha has established itself as one of the most innovative and competitive brands in the 4-stroke and 2-stroke classes.
Yamaha are marking this significant moment in the company’s history with an all new YZ250F that has been created with the immense knowledge gained during half a century of competition in every major GP category.
To commemorate 50 successful years since the first Yamaha YZ models made a lasting impact on the motocross racing world, the 2024 line-up will include exclusive YZ250F, YZ450F, YZ250 and YZ125 50th Anniversary Edition models. Featuring racing white bodywork, purple seats, black wheels and retro-styled purple/pink graphics, these 50th Anniversary Edition bikes offer every Yamaha rider the chance to be a part of this very special occasion.
The 50th Anniversary Edition colouring is inspired by the bold designs used on the YZ250 and YZ125 in the mid-1990s – a period of transition for Yamaha motocross machines which was soon to be followed by the arrival of the first YZ 4-stroke in 1998 and the beginning of a new era of ‘Yamaha Blue’ colours for the company’s Off Road Competition models.
The introduction of the new YZ250F reinforces the range to make the 2024 Yamaha Off Road Competition line-up stronger than ever – with a diverse choice of 4-strokes, 2-strokes, motocross, enduro, youth and kids’ bikes.
2024 Yamaha YZ125 Totalmotorcycle.com Features and Benefits
TOP FEATURES
Class-Leading KYB® Suspension
The YZ125’s renowned suspension performance offers unmatched levels of control, capability and comfort by way of the fully adjustable 48mm inverted KYB® front fork, including a leaf spring in the mid-speed valve for more precise damping, and the fully adjustable KYB® rear shock featuring reduced-friction Kashima Coat™ internals. It all adds up to class-defining suspension and handling characteristics.
Confidence-Inspiring Ergonomics
A carefully considered ergonomic design includes a flatter seat, narrow fuel tank, smoothly integrated body panels and slim shroud width to enable greater freedom of movement forward and back, allowing the rider to easily shift body weight for increased control and confidence.
High Performance Braking System
High performance front and rear brake setup offers exceptional braking power and feel.
Perfect for Aspiring Motocrossers
A pure motocross machine, the light, nimble, competition-ready YZ125 is the perfect choice for riders stepping up from the 85cc class.
Powerful Two-Stroke YZ125 Engine
Yamaha’s advanced, liquid-cooled 125cc two-stroke engine provides impressive acceleration, thrilling mid- to high-rpm power, along with supreme usability.
Rider-Friendly Chassis
Lightweight finely tuned chassis means nimble handling, more control and less rider fatigue—the ideal platform for advancing skills and gaining confidence.
ADDITIONAL FEATURES
Race-Ready Features
Complete with an aluminum handlebar, two-position adjustable handlebar clamp, wide footpegs, 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.
CHASSIS/SUSPENSION
Advanced KYB® Shock
Fully adjustable KYB® rear shock features reduced-friction Kashima Coat™ internals, separate adjusters for high- and low-speed compression damping, a full lock oil rebound system for increased comfort, and 12.4 inches of travel. It all adds up to fantastic rear wheel control and class-leading capability.
Confidence-Inspiring Ergonomics
A carefully considered ergonomic design includes a flatter seat, narrow fuel tank, smoothly integrated body panels and slim shroud width to enable greater freedom of movement forward and back, allowing the rider to easily shift body weight for increased control and confidence.
High Performance Braking System
The high performance braking system features a 270mm front rotor, 240mm rear rotor, large front pistons and rigid calipers, all combining to provide exceptional braking power and feel.
Industry-Leading KYB® Fork
The Speed Sensitive System 48mm inverted KYB® fork includes a leaf spring in the mid-speed valve for more precise damping and increased performance and comfort, while offering up 11.8 inches of travel.
Lightweight Frame
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.
Race-Ready Tires
Premium Bridgestone® Battlecross X20 tires offer strong cornering grip and race-developed performance.
Rider-Friendly Chassis
Lightweight finely tuned chassis means nimble handling, more control and less rider fatigue—the ideal platform for advancing skills and gaining confidence.
ENGINE
Close-Ratio Transmission
Close-ratio six-speed transmission has wider transmission gear tooth width and optimized gear ratios for maximum performance.
Digital Ignition
Digital CDI system delivers precise spark and monitors engine speed to ensure optimal timing for faster, stronger response during hard acceleration.
High-Capacity Radiator
High-capacity radiator with dark louvers deliver maximum cooling efficiency and an aggressive look.
Powerful Two-Stroke YZ125 Engine
Yamaha’s advanced, liquid-cooled 125cc two-stroke engine provides impressive acceleration, thrilling mid- to high-rpm power, along with supreme usability.
Precise Fueling & Ignition Timing
High-precision Hitachi Astemo® Keihin PWK38S carburetor features a power jet, throttle position sensor and 3D-map-controlled CDI unit for precise ignition timing. The result is clean, crisp throttle response, superior rideability and excellent over-rev character.
Yamaha Power Valve System
Patented Yamaha Power Valve System (YPVS™) combines crisp, hard-hitting bottom-end acceleration with strong mid-range and top-end.
*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.
2024 Yamaha YZ125 – Totalmotorcycle.com USA Specifications/Technical Details
US MSRP Price: $7,099 USD
Canada MSRP Price: $8,299 CDN
Europe/UK MSRP Price: £ See Dealer GBP (On The Road inc 20% Vat)
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 Anniversary White |
2024 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 Anniversary White |
2024 Yamaha YZ125 – Totalmotorcycle.com European Specifications/Technical Details
Engine
Engine type Liquid-cooled, 2-stroke, Forward-inclined single
cylinder, Reed valve with YPVS
Displacement 125cc
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 Keihin PWK38S/1
Chassis
Frame Semi double cradle
Caster angle 26º
Trail 109 mm
Front suspension system Upside-down telescopic fork
Rear suspension system Swingarm, link suspension
Front travel 300 mm
Rear travel 315 mm
Front brake Hydraulic single disc, Ø270 mm
Rear brake Hydraulic single disc, Ø240 mm
Front tyre 80/100-21 51M
Rear tyre 100/90-19 57M
Dimensions
Overall length 2.135 mm
Overall width 825 mm
Overall height 1.295 mm
Seat height 980 mm
Wheel base 1.445 mm
Minimum ground clearance 365 mm
Wet weight (including full oil and fuel tank) 95 kg
Fuel tank capacity 7,0 L
Oil tank capacity 0,7 L
Manufacturer Specifications and appearance are subject to change without prior notice on Total Motorcycle (TMW).
