Key performance
Technical specifications
- Displacement
- 252 cc → 250 cc
- Power
- 32.0 ch (23.5 kW) → 42.1 ch (31.0 kW)
- Compression ratio
- 13.5:1 → 13.8:1
- Fuel system
- Injection. Yamaha Fuel Injection (YFI), Keihin 44mm → Injection. Mikuni, 44mm
- Starter
- Kick → Electric
- Frame
- Aluminium frame with steel engine mounts → Bilateral beam aluminum frame
- Final drive
- Chain (final drive) → Chain (final drive)
- Clutch
- Wet multi-disc → Multiplate wet clutch
- Rear suspension
- KYB Fully adjustable single shock → KYB fully adjustable single shock
- Rear wheel travel
- 315 mm (12.4 inches) → 318 mm (12.5 inches)
- Front brakes
- Single disc. Hydraulic. → Single disc. Hydraulic.
- Rear brakes
- Single disc. Hydraulic. → Single disc. Hydraulic.
- Front tyre
- 80/100-21 → 80/100-21
- Rear tyre
- 100/90-19 → 100/90-19
- Seat height
- 965.00 mm → 970.00 mm
- Ground clearance
- 325.00 mm → 335.00 mm
- Length
- 2164.00 mm → 2174.00 mm
- Height
- 1280.00 mm → 1285.00 mm
- Fuel capacity
- 7.50 L → 6.06 L
- Weight
- 105.00 kg → 106.10 kg
- New price
- 8 199 € → 9 399 €
Engine
- Displacement
- 250 cc
- Power
- 42.1 ch (31.0 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
- TCI: Transistor Controlled Ignition
- Starter
- Electric
Chassis
- Frame
- Bilateral beam aluminum frame
- Gearbox
- 5-speed
- Final drive
- Chain (final drive)
- Clutch
- Multiplate wet clutch
- Front suspension
- KYB speed-Sensitive System, inverted fork: fully adjustable
- Rear suspension
- KYB fully adjustable single shock
- 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
- Rear tyre
- 100/90-19
Dimensions
- Seat height
- 970.00 mm
- Wheelbase
- 1476.00 mm
- Ground clearance
- 335.00 mm
- Length
- 2174.00 mm
- Width
- 826.00 mm
- Height
- 1285.00 mm
- Fuel capacity
- 6.06 L
- Weight
- 106.10 kg
- New price
- 9 399 €
Overview
It’s impossible to talk about motocross without the name Yamaha YZ250F coming up. It’s no coincidence that this track beast collects podium finishes in MXGP and Supercross. For 2023, it displays a price tag of 9399 euros, a featherweight dry weight of 106 kg, and a technical specification that makes the competition tremble. But beyond the numbers, what makes it such a tenacious benchmark against a Honda CRF250R or a KTM 250 SX?

The secret is constant, almost obsessive, evolution. Following the major overhaul of 2021 with its new frame and optimized engine, Yamaha spent the following years refining the details. We’re talking about hundreds of grams shaved from a hub, a lighter chain, a reworked KYB Speed-Sensitive System fork. This may seem insignificant, but on a rutted track, every gram less and every more precise adjustment translates into tenths of a second gained. The engine, a 250 cm³ single-cylinder four-stroke, is a gem. With its inverted cylinder head and forward-facing intake, it delivers a spread-out power output of approximately 42 horsepower, which perfectly matches the demands of modern cross-country racing. Comparing it to a two-stroke like the KTM 250 SX is instructive: the latter may have a higher top speed, but the YZ250F offers a more progressive power delivery and better control at low and mid-range RPMs, which is often decisive in tight corners or technical sections.
Speaking of the chassis, the redesigned bilateral aluminum frame offers a balance between rigidity and flexibility that inspires incredible confidence. Coupled with the fully adjustable KYB suspensions, which have benefited from new, more progressive settings, the bike swallows bumps without a hitch and remains surgically precise in corners. Braking is not to be outdone, with stiffer calipers and enlarged discs (270 mm at the front) offering superior braking power without adding weight to the whole. And then there’s this digital asset: the Power Tuner. Connecting your smartphone to adjust the injection mapping in two clicks is a huge advantage for the rider who wants to fine-tune their machine according to track conditions. It’s this ability to be personalized that makes the YZ250F so prized, whether we’re talking about a new 2024 model or a used model from the 2017 to 2020 years.
So, who is it for? Clearly for the serious cross-country rider, whether an informed amateur or a competitor. It’s not a bike for beginners; its temperament requires a certain level of mastery. Its 6-liter tank is a reminder that it’s made for the track, not for leisurely rides. But for those seeking the ultimate weapon in the 250 four-stroke category, it’s a top-tier candidate. It doesn’t have the brutal character of some Austrians, but it compensates with versatility, reliability, and handling that make it a formidable partner. The numerous Yamaha YZ250F decoration kits and accessories available, not to mention the aftermarket exhausts for older models like the 2009, are also a testament to its lasting popularity within the community. A machine that doesn’t cheat, simply.
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