YZ250
What do an army of freestylers, motocross riders, hard-core weekend trailriders and elite level cross-country racers have in common? A passion for the punchy two-stroke power and agility, latest chassis technology and easy-on-the-wallet upkeep of Yamaha’s YZ250.
249cc liquid-cooled reed-valve-inducted two-stroke engine is lightweight, compact and features an incredibly wide, hard hitting powerband.
Smooth-shifting, five-speed, close-ratio transmission with heavy-duty, multiplate clutch.
YZ250F-style front-brake caliper and wave type front and rear discs minimise unsprung weight and provide excellent stopping power.
48mm forks feature the Speed-Sensitive System that uses piston speed to control damping force for super-precise handling and a smooth ride.
38mm Keihin PWK carburettor with power jet and throttle position sensor (TPS) ensures precise fuel/air mixing and extra-crisp throttle response throughout the powerband.
Patented YPVS power-valve system combines crisp, hard-hitting, bottom-end acceleration with strong midrange and eye-opening top-end.
Large-capacity radiator features a ten row core with four louvres for maximum cooling efficiency.
Digital CDI ignition system delivers precise spark for faster, stronger response anywhere in the powerband.
249cc liquid-cooled reed-valve-inducted two-stroke engine is lightweight, compact and features an incredibly wide, hard hitting powerband.
Smooth-shifting, five-speed, close-ratio transmission with heavy-duty, multiplate clutch.
YZ250F-style front-brake caliper and wave type front and rear discs minimise unsprung weight and provide excellent stopping power.
48mm forks feature the Speed-Sensitive System that uses piston speed to control damping force for super-precise handling and a smooth ride.
38mm Keihin PWK carburettor with power jet and throttle position sensor (TPS) ensures precise fuel/air mixing and extra-crisp throttle response throughout the powerband.
Patented YPVS power-valve system combines crisp, hard-hitting, bottom-end acceleration with strong midrange and eye-opening top-end.
Large-capacity radiator features a ten row core with four louvres for maximum cooling efficiency.
Digital CDI ignition system delivers precise spark for faster, stronger response anywhere in the powerband.
Engine
| Engine Type | Liquid-cooled, 2-stroke, reed-valve with YPVS |
|---|---|
| Displacement | 249 cc |
| Bore x Stroke | 66.4 x 72.0 mm |
| Compression Ratio | 8.9 ~ 10.6 : 1 |
| Lubrication System | Premix |
| Fuel Management | PWK38S |
| Ignition | CDI |
| Starter System | Kick |
| Fuel Tank Capacity | 8 L |
| Oil Capacity | 0.8 L |
| Final Transmission | Chain |
| Transmission | 5-speed |
Dimensions
| Length | 2185 mm |
|---|---|
| Width | 825 mm |
| Height | 1290 mm |
| Seat Height | 970 mm |
| Wheelbase | 1485 mm |
| Ground Clearance | 360 mm |
| Dry Weight | 97 kg |
| Wet Weight | 103 kg with 8 litres of fuel |
Chassis
| Frame Type | Semi double cradle |
|---|---|
| Suspension Front | USD Telescopic fork, 300mm travel |
| Suspension Rear | Swingarm, 315mm travel |
| Brakes Front | Single disc, 250mm |
| Brakes Rear | Single disc, 245mm |
| Tyres Front | 80/100-21 51M |
| Tyres Rear | 110/90-19 62M |








