Key performance
Technical specifications
- Power
- 32.0 ch (23.5 kW) → —
- Compression ratio
- 13.8:1 → 13.5:1
- Valves/cylinder
- 4 → 5
- Fuel system
- Injection. Mikuni, 44mm → Carburettor. Keihin FCR MX39
- Ignition
- TCI: Transistor Controlled Ignition → CDI
- Frame
- Bilateral beam aluminum frame → Poutre bilatérale en aluminium
- Clutch
- Multiplate wet clutch → Multiplate, wet
- Front suspension
- KYB speed-Sensitive System, inverted fork: fully adjustable → KYB Speed-Sensitive System, inverted fork: fully adjustable, 11.8-in travel
- Rear suspension
- KYB fully adjustable single shock → KYB Fully adjustable single shock
- Front wheel travel
- 310 mm (12.2 inches) → —
- Front brakes
- Single disc. Hydraulic. → Single disc. Hydraulic
- Rear brakes
- Single disc. Hydraulic. → Single disc. Hydraulic
- Seat height
- 970.00 mm → 991.00 mm
- Ground clearance
- 335.00 mm → 378.00 mm
- Length
- 2174.00 mm → 2169.00 mm
- Height
- 1285.00 mm → 1306.00 mm
- Weight
- 106.10 kg → 103.00 kg
- New price
- 8 499 € → 8 199 €
Engine
- Displacement
- 250 cc
- Engine type
- Single cylinder, four-stroke
- Cooling
- Liquid
- Compression ratio
- 13.5:1
- Bore × stroke
- 77.0 x 53.6 mm (3.0 x 2.1 inches)
- Valves/cylinder
- 5
- Camshafts
- 2 ACT
- Fuel system
- Carburettor. Keihin FCR MX39
- Valve timing
- Double Overhead Cams/Twin Cam (DOHC)
- Lubrication
- Wet sump
- Ignition
- CDI
- Starter
- Electric
Chassis
- Frame
- Poutre bilatérale en aluminium
- Gearbox
- 5-speed
- Final drive
- Chain (final drive)
- Clutch
- Multiplate, wet
- Front suspension
- KYB Speed-Sensitive System, inverted fork: fully adjustable, 11.8-in travel
- Rear suspension
- KYB Fully adjustable single shock
- Rear wheel travel
- 318 mm (12.5 inches)
Brakes
- Front brakes
- Single disc. Hydraulic
- Rear brakes
- Single disc. Hydraulic
- Front tyre
- 80/100-21
- Rear tyre
- 100/90-19
Dimensions
- Seat height
- 991.00 mm
- Wheelbase
- 1476.00 mm
- Ground clearance
- 378.00 mm
- Length
- 2169.00 mm
- Width
- 826.00 mm
- Height
- 1306.00 mm
- Fuel capacity
- 6.06 L
- Weight
- 103.00 kg
- New price
- 8 199 €
Overview
Think back to the last time you saw a motocross rider attack a dirt corner, their body glued to the machine, searching for that grip that makes the difference between first and second place. That’s precisely the moment when the philosophy of the Yamaha YZ250F makes sense. It’s not just a motorcycle; it’s a precision tool designed to tame the most demanding circuits. With a bilateral aluminum frame that boasts a featherweight dry weight of 103 kilograms, it speaks the language of pure agility. Its wheelbase of 1476 mm and generous ground clearance offer straight-line stability that contrasts with a surprising liveliness when entering curves. Mass centralization is so well thought out that the motorcycle seems to anticipate your requests, favoring an explosive corner exit where every horsepower is put to good use.

The heart of the beast is this five-valve four-stroke single-cylinder engine, an architecture that has served the brand well in competition. With a generous bore of 77 mm and a compression ratio of 13.5:1, it doesn’t seek the abrupt, raw power of a two-stroke, but rather a linear and exploitable power curve. Tests, such as those by *Dirt Rider*, credit recent machines with approximately 38 horsepower, a power that is delivered with remarkable progressiveness. It is this consistency, this ability to pull from the bottom of the rev range, that makes the YZ250F so effective on a timed lap and so reassuring for an amateur rider. Faced with a KTM 250 SX two-stroke that can approach 140 km/h at top speed, the Yamaha, with its approximately 120 km/h, focuses on regularity and traction, major assets on a rough track.
This search for control is reflected in the chassis. The KYB adjustable suspensions on both sides, with their 300 mm of travel at the front, are masterpieces of absorption. They swallow whoops and landing ramps with a serenity that allows the rider to remain focused on their trajectory. The braking, ensured by two hydraulic discs, is powerful and modulable, a crucial point when you know that late braking can gain a position. The small 6-liter tank recalls this machine’s pure competition origins; it’s not made for leisurely rides, but for intense track sessions. It is there that it excels, as evidenced by its multiple victories in MXGP and Supercross, making a used Yamaha YZ250F a consistently relevant choice for those seeking a high-performance base.
Who is it for? Clearly for the dedicated motocross rider, from the young ambitious pilot to the seasoned veteran. Its new price, which hovered around 8200 euros at the time, made it a serious investment, but its robustness and potential make it today a safe bet on the used market. It forgives more than a two-stroke while offering a very high level of performance. Purists seeking the raw sensation may prefer a two-stroke, but for those who want efficiency, precision, and an engine that works with them, the YZ250F remains a benchmark. It is a machine that doesn’t cheat, demanding but fair, rewarding technique and consistency with lap times that smile upon you.
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