🛠️ Engine & Performance

• Engine Type: 250cc liquid-cooled, DOHC, 4-stroke single cylinder with 4 valves.
• Bore x Stroke & Compression: 77.0mm × 53.6mm with a high 13.8:1 compression ratio for a highly responsive power delivery.
• Fuel Delivery: Advanced Mikuni® 44mm fuel injection system ensuring crisp throttle response.
• Transmission: Smooth constant-mesh 5-speed manual gearbox paired with a multiplate wet clutch.
• Power Delivery: Renowned for an incredible, aggressive low-end punch and meaty mid-range power on the track.

🏗️ Chassis, Suspension & Handling

• Frame: Redesigned lightweight bilateral aluminum beam frame inherited from the flagship YZ450F, balancing straight-line stability and precise cornering agility.
• Front Suspension: Fully adjustable inverted KYB® coil spring-type forks featuring speed-sensitive damping and a toolless hand-adjustable compression knob.
• Rear Suspension: Linkage-type Monocross rear suspension utilizing a fully adjustable KYB® shock tailored for optimal traction on corner exits.
• Brakes: High-power hydraulic braking setup featuring a 270mm front disc and a 240mm rear disc.

📐 Ergonomics & Dimensions

• Body Design: Ultra-slim radiator shrouds, a narrower fuel tank, and a flatter, more streamlined seat area that makes moving weight around effortless.
• Rider Triangle: Enhanced legroom created by slightly lower footpegs and a repositioned seat for superior rider ergonomics and all-day track comfort.
• Estimated Wet Weight: A highly agile 231 to 233 lbs (fully fueled and filled with fluids)