Menu
  1. Insurance Enquiries
  2. Finance Calculators
  3. Finance Enquiries

YZ125

YZ125

The culmination of more than 50 years of Yamaha two-stroke innovation, the latest YZ125 is a bike built to take you to the VictorYZone.

Featuring lightweight race-bred engine internals and the renowned torque-boosting Yamaha Power Valve System (YPVS), the YZ125 develops hard-hitting power that keeps you out front.

Along with its advanced aluminium frame, class-leading KYB® suspension and ultra slim bodywork providing a high degree of controllability both on the ground and in the air, it's designed for competition straight out of the box.

Features

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.

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 VZ125 features low speed damping settings on both the front and rear suspension systems for better handling characteristics.

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.

Race-developed Ergonomics

Race-developed Ergonomics

Complete with an aluminium 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.
Make an Enquiry View More Models

Technical Specification

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): 7.0

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 51M Tube type

Tyres Rear: 100/90-19 57M Tube type

Dimensions

Length (mm): 2135

Width (mm): 825

Height (mm): 1295

Seat Height (mm): 980

Wheelbase (mm): 1445

Ground Clearance (mm): 365

Wet Weight (kg): 96

Gallery

Resources

2026 Off Road Brochure

2026 Off Road Brochure

Download Specification Sheet

Download Specification Sheet

Make an Enquiry View More Models

Next Steps

Interested? Call Racecourse Motors on 02 9314 7700

  • Book a Test Ride

    The best way to experience Yamaha Off Road Motorbikes is with a test drive.

    Book a Test Ride

  • Finance Calculator

    We're here to help you with your motorbike financing needs.

    Calculate Repayments

  • Want to Know More?

    Want to know more from the team at Racecourse Motors? Get in touch with us!

    Get in Touch
  1. Home
  2. Showroom
  3. Yamaha
  4. Yamaha Motocross
  5. YZ125
Facebook Twitter