Yamaha YZ125 Monster Energy 2025

Description

The YZ125 represents an important evolution in Yamaha’s two-stroke lineage. Yamaha engineers put considerable thought into developing a motorcycle that would be both dominant on the racetrack and user-friendly for developing riders looking to bridge the gap between recreation riding and competitive motocross.

The advanced liquid-cooled 125cc two-stroke engine provides impressive acceleration, thrilling mid- to high-rpm power, along with supreme usability. While the lightweight finely tuned chassis means nimble handling, more control and less rider fatigue - the ideal platform for advancing skills and gaining confidence.
 

This special edition is fitted with Monster Energy Yamaha Racing graphics for a factory look.

Price:
$12,149.00
Reference Number/VIN:
YZ125SPS
Colour:
Monster Energy Yamaha Racing Edition
Engine:
Liquid-cooled, 2-stroke, reed-valve
Drive Away:
Yes
Make:
Yamaha
Model:
YZ125 Monster Energy
Type:
Motocross
Condition:
New
Year:
2025

Enquiry

Features


Race-developed ergonomics

Race-developed ergonomics

Complete with an aluminium handlebar, two-position adjustable handlebar clamp, lightweight bar pad, 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.

Powerful Two-Stroke YZ125 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.

Close-ratio transmission

Close-ratio transmission

Close-ratio six-speed transmission has wider transmission gear tooth width and optimised gear ratios for maximum performance.

Keihin Powerjet carburettor

Keihin Powerjet carburettor

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.

Lightweight frame

Lightweight frame

Race-proven, highly developed aluminium 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 aluminium rear subframe is constructed of square-section tubing for reduced weight.

Powerful braking system

Powerful 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.

Best-in-class KYB suspension

Best-in-class KYB suspension

Yamaha’s SSS (Speed Sensitive System) KYB front forks are widely regarded as being amongst the best designs available on a production motocross bike, and the YZ125 features low speed damping settings on both the front and rear suspension systems for better handling characteristics. Tool-free compression adjustment now features on top of each fork leg.

Technical Specifications


Engine

Engine Type
Liquid-cooled, 2-stroke, reed-valve
Displacement (cc)
125.0
Bore x Stroke (mm)
54.0 x 54.5
Compression Ratio
8.2 - 10.1 : 1
Lubrication System
Premix
Fuel Management
PWK38S
Ignition
CDI
Starter System
Kick
Fuel Tank Capacity (L)
7
Final Transmission
Chain
Transmission
Constant mesh 6-speed

Chassis

Frame Type
Aluminium controlled filled semi double cradle
Suspension Front
Telescopic forks, 300mm travel
Suspension Rear
Swingarm (link suspension), 315mm travel
Brakes Front
Hydraulic single disc, 270mm
Brakes Rear
Hydraulic single disc, 240mm
Tyres Front
80/100-21 Bridgestone Battlecross X20F
Tyres Rear
100/90-19 Bridgestone® Battlecross X20

Dimensions

Length (mm)
2135
Width (mm)
825
Height (mm)
1295
Seat Height (mm)
975
Wheelbase (mm)
1440
Ground Clearance (mm)
365
Wet Weight (kg)
95
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