Key performance
Technical specifications
Engine
- Displacement
- 250 cc
- Power
- 34.0 ch (25.0 kW)
- Engine type
- Single cylinder, four-stroke
- Cooling
- Liquid
- Compression ratio
- 13.8:1
- Bore × stroke
- 77.0 x 53.6 mm (3.0 x 2.1 inches)
- Valves/cylinder
- 4
- Camshafts
- 2 ACT
- Fuel system
- Injection. Mikuni 44mm
- Valve timing
- Double Overhead Cams/Twin Cam (DOHC)
- Lubrication
- Wet sump
- Ignition
- CDI
- Starter
- Electric
Chassis
- Frame
- Aluminium, bilateral beam frame
- Gearbox
- 6-speed
- Final drive
- Chain (final drive)
- Clutch
- Multiplate wet clutch
- Front suspension
- KYB® spring-type fork with speed sensitive damping; fully adjustable
- Rear suspension
- KYB® single shock; fully adjustable
- Front wheel travel
- 310 mm (12.2 inches)
- Rear wheel travel
- 318 mm (12.5 inches)
Brakes
- Front brakes
- Single disc. Hydraulic.
- Rear brakes
- Single disc. Hydraulic.
- Front tyre
- 80/100-21
- Front tyre pressure
- 1.00 bar
- Rear tyre
- 110/100-18
- Rear tyre pressure
- 1.00 bar
Dimensions
- Seat height
- 955.00 mm
- Wheelbase
- 1481.00 mm
- Ground clearance
- 320.00 mm
- Length
- 2174.00 mm
- Width
- 826.00 mm
- Height
- 1270.00 mm
- Fuel capacity
- 8.33 L
- Weight
- 115.20 kg
- New price
- 8 599 €
Overview
Can a 250 four-stroke still make an experienced rider’s skin tingle, or is it destined to be a beginner’s utility machine? The Yamaha WR250F, especially in its 2021 version which inherits the major overhaul of 2020, delivers a resounding answer. Here, we're not talking about a compromise machine, but a real race bike detuned for the general public, directly inspired by the ferocious YZ250F motocross bike. At nearly €8600, it clearly targets the serious enduro rider seeking the aggressiveness of a track bike with the versatility and homologation for trails.

The heart of the beast is this 250 cm³ single-cylinder engine with a reverse cylinder head. With 34 horsepower and a compression ratio of 13.8:1, it doesn’t joke around. Yamaha reworked everything for 2020: forged piston, revised cam timing, a 12-hole injector, and a new 44 mm Mikuni throttle body. The result? More rapid and more linear power across the entire rev range, far from the older four-stroke 250s that were a bit peaky. The torque is better distributed, which translates to exemplary traction on technical climbs. Compared to a KTM 250 EXC-F, it may seem a tad less explosive at very high RPM, but it gains in progressiveness and ease of handling, a major asset on rough terrain. A significant plus is compatibility with the Power Tuner application. Plug in your smartphone, and you adjust the injection and ignition mapping among 16 steps. This is a rare level of customization on a production model, allowing you to soften the beast for a slippery trail or unleash it all for a timed special.
The chassis is just as well-engineered. The bilateral beam aluminum frame offers a 15% increase in rigidity, transmitting crystalline information. Paired with high-end KYB suspension (air/oil separated fork and rear shock), inherited from the YZ and adapted for enduro, it swallows bumps with great composure. The wet weight of 115 kg is a significant argument against some Austrian competitors. You can feel that the engineers have eliminated unnecessary grams, with a miniaturized electric starter, a lightweight clutch, and a resin engine guard. The 320 mm ground clearance and 955 mm seat height make it a tall bike, designed for tall riders or pilots who like to dominate the terrain. The 8.3-liter fuel tank is well-thought-out, offering correct range without compromising the finesse of the bodywork.
So, who is this 2021 Yamaha WR250F for? Certainly not for a complete novice. Its lively temperament, seat height, and price target a rider with some experience in off-road, seeking an ultra-efficient machine for sporty enduro, amateur competitions, or demanding outings. It's the perfect weapon for those who want a bike ready to race, with Yamaha’s seriousness and reliability as a bonus. Searches for models like the Yamaha WR250F 2019 or the Yamaha WR250F 2023 clearly show the constant interest in this lineage. If you find a used Yamaha WR250F in good condition, it's often a good deal, because the major evolution took place in 2020. Its drawback? Perhaps precisely this very "race" character that can intimidate and its price which places it in the big leagues. But for those who can afford it and have the talent, it's a gaming partner of formidable efficiency, proof that a 250 can be much more than a simple learning toy.
Practical info
- La moto est accessible aux permis : A
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