Yamaha YZ125 Parts & Accessories
The Yamaha YZ125 is a two-stroke icon—lightweight, aggressive, and engineered for the track. Built on over 50 years of Yamaha’s two-stroke innovation, this 125cc weapon delivers instant throttle response and top-end power, thanks to the Yamaha Power Valve System (YPVS), race-tuned internals, and advanced reed-valve induction. With KYB® suspension, an aluminium frame, and razor-sharp ergonomics, the YZ125 is made for riders chasing podiums.
At Top Two Moto, we supply the parts and accessories you need to keep your YZ125 running at full potential. Whether it’s routine maintenance or race prep, our collection includes chains, sprockets, filters, brake pads, engine oils, plastics, and more—designed for direct fit and reliable performance.
The YZ125 demands precision, and we’re here to help you deliver it. With fast shipping Australia-wide and knowledgeable service, Top Two Moto is your go-to destination for Yamaha YZ125 parts. Keep your 2-stroke tuned, crisp, and ready for every gate drop.
Replacing Yamaha YZ125 Battery
The Yamaha YZ125 is built as a kick-start two-stroke motocross machine and does not require a battery in its stock configuration. However, if you're running additional electronics such as lights or a telemetry system for enduro or trail conversions, a lightweight lithium battery can be added using an aftermarket battery box. At Top Two Moto, we offer battery options and accessories for modified YZ125 setups where additional electrical support is required—without compromising weight or performance.
Buying Yamaha YZ125 Chain & Sprocket
With its high-revving engine and aggressive powerband, the YZ125 places significant demands on the chain and sprockets—especially in race conditions. A worn drivetrain can reduce acceleration, increase risk of mechanical failure, and affect rider control. We stock heavy-duty 520 chain and sprocket kits designed specifically for the Yamaha YZ125, available in steel or alloy combinations for strength and lightweight performance. At Top Two Moto, we make sure your YZ125 has the drivetrain durability and responsiveness needed to stay ahead of the pack.
Changing Yamaha YZ125 Motor Oil
Even though the Yamaha YZ125 runs on a pre-mix system, using quality 2-stroke oil is essential to protect the engine at high RPMs. Synthetic or semi-synthetic 2T oil reduces carbon build-up, enhances throttle response, and keeps internals lubricated during intense rides. The YZ125’s performance depends on a proper fuel-to-oil ratio (usually around 32:1 or 40:1 depending on your setup). At Top Two Moto, we carry trusted 2-stroke oils that deliver smooth combustion, less smoke, and optimal engine life—keeping your YZ125 on point all season long.
