2023 Yamaha YZ125: TWO‑STROKE EVOLUTION.
Introducing the new 2023 Yamaha YZ125…
More powerful, more capable, more advanced. Offering the ideal blend of performance, reliability and usability to develop the skills to win.
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.
he YZ125 was developed with a clear mission: to give young motocross riders a machine that can win at every level. Which is why we’ve developed our fastest ever Yamaha 125cc 2-stroke engine as well as the lightest handling high-tech chassis with industry-leading suspension and radical slimline bodywork.
2 Stroke evolution.
Featuring lightweight race-bred engine internals and benefitting from Yamaha’s famous torque-boosting YPVS (Yamaha Power Valve System), the YZ125 develops hard-hitting power that keeps you way out front. The high-efficiency air intake ensures optimum performance and instant throttle response – and the slick shifting close-ratio 6-speed transmission helps you to shave precious seconds off your lap times.
Its sharp looking ultra slim bodywork gives you a high degree of controllability on the ground and in the air – and the flat seat and race-developed ergonomics allow you to move easily around the bike when braking and accelerating hard. The YZ125 is in it to win it – now just add your ability and prepare to enter the victorYZone!
YZ125
Right now the YZ125 is the bike of choice for future champions. The YZ125’s super slim bodywork, agile high specification chassis and flat seat allow you to shift weight quickly for total control – and with Yamaha’s most powerful 125cc production engine, high efficiency braking system and state-of-the-art suspension, this bike is destined for the victorYZone!
POWERFUL TWO-STROKE ENGINE
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.
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.
BOLD MONSTER ENERGY® YZ STYLING
Bold Monster Energy®‑inspired graphics package combined with aggressive YZ bodywork, slim body panels and blacked-out radiator shrouds for an official Yamaha factory team look and feel.
2023 Yamaha YZ125 Totalmotorcycle.com Key Features
- Most powerful YZ125 engine
- Ultra-slim bodywork
- Keihin Powerjet carburettor
- Smooth shifting 6-speed transmission
- High-efficiency air intake
- Race-developed ergonomics
- Best-in-class KYB suspension
- Powerful braking system
- Single bolt seat fixing
- Duo-tone colour and new graphics
- 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. - 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. - 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. - High Performance Braking System
High performance front and rear brake setup offers exceptional braking power and feel. - 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. - 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.
2023 Yamaha YZ125 Totalmotorcycle.com Features and Benefits
ENGINE
- 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. - Yamaha Power Valve System
Patented Yamaha Power Valve System (YPVS™) combines crisp, hard-hitting bottom-end acceleration with strong mid-range and top-end. - 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. - 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.
CHASSIS/SUSPENSION
- 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. - 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. - 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. - 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. - 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. - Race-Ready Tires
Premium Bridgestone® Battlecross X20 tires offer strong cornering grip and race-developed performance.
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.
2023 Yamaha YZ125 – Totalmotorcycle.com USA Specifications/Technical Details
US MSRP Price: $6999 USD
Canada MSRP Price: $8299 – $8499 CDN
Europe/UK MSRP Price: from £7200 GBP (On The Road inc 20% Vat)
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
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
L x W x H 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
Maximum Ground
Clearance
14.4 in
Fuel Capacity 1.8 gal
Wet Weight 209 lb
Warranty 30 Day (Limited Factory Warranty)
Color Team Yamaha Blue
2023 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
2023 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 mm x 54,5 mm
Compression ratio 8,2-10,1 : 1
Maximum torque –
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).
