Key performance
Technical specifications
- Displacement
- 250 cc → 252 cc
- Valves/cylinder
- 5 → 4
- Camshafts
- — → 2 ACT
- Fuel system
- Carburettor. Keihin FCR MX37 → Injection. Yamaha Fuel Injection (YFI), Keihin 44mm
- Lubrication
- Dry sump → —
- Ignition
- CDI → TCI: Transistor Controlled Ignition
- Starter
- Kick → Electric
- Frame
- Yamaha Motor Home → Aluminum Bilateral Beam frame
- Front suspension
- Speed-Sensitive System inverted fork → KYB Speed-Sensitive System, inverted fork: fully adjustable
- Rear suspension
- Fully adjustable single shock → KYB Fully adjustable single shock
- Front wheel travel
- 300 mm (11.8 inches) → 310 mm (12.2 inches)
- Rear wheel travel
- 305 mm (12.0 inches) → 315 mm (12.4 inches)
- Front brakes
- Single disc → Single disc. Hydraulic.
- Rear brakes
- Single disc → Single disc. Hydraulic.
- Seat height
- 988.00 mm → 965.00 mm
- Wheelbase
- 1466.00 mm → 1476.00 mm
- Ground clearance
- 376.00 mm → 325.00 mm
- Length
- 2159.00 mm → 2164.00 mm
- Height
- 1303.00 mm → 1280.00 mm
- Fuel capacity
- 6.43 L → 6.06 L
- Weight
- 102.00 kg → 104.80 kg
- New price
- — → 7 899 €
Engine
- Displacement
- 252 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
- 4
- Camshafts
- 2 ACT
- Fuel system
- Injection. Yamaha Fuel Injection (YFI), Keihin 44mm
- Valve timing
- Double Overhead Cams/Twin Cam (DOHC)
- Ignition
- TCI: Transistor Controlled Ignition
- Starter
- Electric
Chassis
- Frame
- Aluminum Bilateral Beam frame
- Gearbox
- 5-speed
- Final drive
- Chain (final drive)
- 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
- 315 mm (12.4 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
- 965.00 mm
- Wheelbase
- 1476.00 mm
- Ground clearance
- 325.00 mm
- Length
- 2164.00 mm
- Width
- 826.00 mm
- Height
- 1280.00 mm
- Fuel capacity
- 6.06 L
- Weight
- 104.80 kg
- New price
- 7 899 €
Overview
Imagine the screech of tires on packed earth, the smell of oil and gasoline, and this precision mechanics screaming beneath you. This is the world of the Yamaha YZ250F, a war machine on motocross tracks that, from the 2015 version onwards, already showed its claws. Far from being a simple evolution, that year, the blue bike received a series of adjustments aimed at refining what already made it strong: a vicious engine and top-notch handling.

Beneath its new "Factory Racing" look bodywork and black rims, the beast hides significant improvements. Engineers reworked the fuel injection and ignition mapping, with a clear objective: to boost the mid-range. The goal? To offer that extra push, easier to dose when exiting corners, where races are won. Even the details go in this direction, like the quick-release air filter cover, a small revolution for mechanics in the heat of the race. With a bilateral aluminum frame and fully adjustable KYB suspension, this Yamaha YZ250F 2015 weighs a little over 104 kg fully fueled, a finesse that makes it predictable and agile.
Talking about the Yamaha YZ250F without mentioning its track record is impossible. This machine crushed the US championship and dominates the MX2 podiums, proving that its competition DNA is not an empty word. For those who want to go further, the "Pro" competition kit developed by YRRD transformed the bike into a true prototype. Forged piston, specific ECU housing, optimized camshafts… the list is long and shows how excellent the base already was. It is this philosophy that has led to recent models, such as the Yamaha YZ250F 2024, a direct heir to this rigor.
Who is this machine for? Clearly the motocross rider, from the young hopeful to the seasoned competitor, who is looking for a bike ready to fight. It forgives a little more than a pure two-stroke, like a KTM 250 SX, but demands commitment. Its 250 cm3 four-stroke engine, with its four valves and a compression ratio of 13.5:1, delivers its power in a more linear fashion. If we compare top speeds, a YZ250F rotates around 120 km/h, where a two-stroke can aim higher, but it is in the power management and track behavior that it excels.
Today, finding a used Yamaha YZ250F, especially a well-developed version like the 2015 model, is an excellent entry point into amateur competition. Its then new price, around 7900 euros, made it a serious, but justified investment for those who wanted top-of-the-line equipment. Enthusiasts are still looking for Yamaha YZ250F 2024 accessories or a Yamaha YZ250F 2009 exhaust to personalize their machine. Whether you are attracted by its track record in MXGP and SX, or simply by its raw efficiency, this bike remains a reference. It is not the most powerful on paper, but it is one of the most effective in the hands of a rider who knows how to make it sing.
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