The YZ250 offers pure performance and full‑throttle adrenaline in a lightweight and reliable two‑stroke machine. - The Yamaha 2025 YZ250

The YZ250 offers pure performance and full‑throttle adrenaline in a lightweight and reliable two‑stroke machine. - The Yamaha 2025 YZ250

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

The 85cc liquid-cooled, two-stroke engine features the Yamaha Power Valve System (YPVS™) for increased low- and mid-range power without losing peak power at high rpms, reducing the need for frequent shifting.

Exhilarating Two-Stroke Power. The 249cc liquid-cooled YPVS™-equipped reed-valve-inducted two-stroke engine is lightweight, compact and fun, with an incredibly wide, hard-hitting powerband. Class-Leading KYB® Suspension

Exhilarating Two-Stroke Power. The 249cc liquid-cooled reed-valve-inducted two-stroke engine is lightweight, compact and fun, with an incredibly wide, hard-hitting powerband. Tuned for GNCC® Competition

Exhilarating Two-Stroke Power. The 249cc liquid-cooled YPVS™-equipped reed-valve-inducted two-stroke engine is lightweight, compact and fun, with an incredibly wide, hard-hitting powerband. High Performance Braking System. High performance front and rear brake setup offers exceptional braking power and feel. Lightweight Frame

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

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 Fuel Capacity: 1.8 gal

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