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2015 Yamaha YZ250FX Overview
The 2015 Yamaha YZ250FX is an enduro / off-road motorcycle. Under the tank sits a Single cylinder, four-stroke engine running Double Overhead Cams/Twin Cam (DOHC) valve actuation. From a practical standpoint, the 2015 YZ250FX tips the scales at 112.9 kg, carries a 7.57-litre fuel tank, offers a seat height of 965 mm and spans a 1,466 mm wheelbase. That's roughly 85.9 kg lighter than the average enduro / off-road motorcycle in our database. Scroll down for the complete 2015 Yamaha YZ250FX spec sheet covering every technical detail from suspension travel to tyre sizes.
2015 YZ250FX - Pros & Cons
Strengths
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Fuel injection: The fuel injection system delivers crisp throttle response and reliable cold starts regardless of altitude or temperature.
Considerations
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Tall seat height: The 965 mm seat height will challenge shorter riders - tiptoeing at low speeds is something to factor into your decision.
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Modest fuel capacity: The 7.57-litre tank means more frequent fuel stops on longer rides, which is worth planning around on touring routes.
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Chain final drive upkeep: Chain final drive needs regular cleaning, lubrication and tension checks to get full life out of the sprockets.
Wear Points & Servicing Notes
Fuelling & injector care
Fuelling comes from fuel injection. Systems like this are largely maintenance-free beyond keeping fuel quality decent and injectors clear - a fuel-system cleaner every service interval is cheap insurance.
Valve clearance checks
Double Overhead Cams/Twin Cam (DOHC) valve actuation on the YZ250FX means clearances should be checked at the manufacturer's specified interval - they can tighten as mileage accumulates, and a light top-end tick is usually the first sign.
Brake disc and pad wear
The Single disc. Hydraulic. front brake gives strong, progressive stopping power. Disc thickness and pad depth are worth checking at every tyre change, since worn pads can score the disc surface.
Suspension condition on used examples
Up front, the YZ250FX runs KYB Speed-Sensitive System and KYB Fully adjustable single shock at the rear. On a used example, check fork seals for weeping oil and test the rear linkage for play - seals are a relatively cheap fix but useful when negotiating price.
Final drive maintenance
Final drive is by chain - expect to clean and lube it every few hundred kilometres and check tension regularly; a neglected chain wears the sprockets faster than the chain itself.
Low-speed handling
At just 112.9 kg, the YZ250FX is light enough to manhandle easily at a standstill - one of the practical advantages of its class.
YZ250FX - Buying & Maintenance Guide
What to check before buying
When inspecting a used 2015 Yamaha YZ250FX, start with the basics: check the service book for oil change frequency, inspect the chain and sprockets for wear, and look for oil seepage around the engine casings and rocker covers. A cold start test is invaluable - a well-maintained YZ250FX should fire up cleanly and settle to a smooth idle within a few seconds.
Oil and filter changes
Regular oil changes are the single most important maintenance task on any YZ250FX. Stick to the manufacturer's interval - typically every 6,000 km or once a year, whichever comes first. The sump holds 1.50 litres, so budget for that volume of quality motorcycle-specific engine oil. Always use the correct viscosity grade as specified in the owner's manual.
Fuel system care
The YZ250FX's fuel injection system is durable but benefits from quality fuel and the occasional use of a fuel-system cleaner additive. If the bike has been stored for more than three months, drain and replace the fuel to prevent varnish deposits in the injectors.
Valve clearance service
Check that valve clearances have been adjusted at the correct intervals on any used YZ250FX. A bike with clearances out of spec doesn't always feel obviously wrong - but tight clearances accelerate valve seat wear. Ask for service documentation proving it's been done.
2015 Yamaha YZ250FX - Frequently Asked Questions
What engine does the 2015 Yamaha YZ250FX have?
The 2015 Yamaha YZ250FX is powered by a Single cylinder, four-stroke engine.
How much does the 2015 Yamaha YZ250FX weigh?
The 2015 Yamaha YZ250FX weighs 112.9 kg. This is the manufacturer's wet figure.
What is the fuel tank capacity of the 2015 Yamaha YZ250FX?
The 2015 Yamaha YZ250FX has a 7.57-litre fuel tank. At around 5-6 litres per 100 km, that is roughly 126-151 km between stops.
Is the 2015 Yamaha YZ250FX suitable for shorter riders?
The 2015 Yamaha YZ250FX has a seat height of 965 mm. This is towards the tall end of the spectrum and will require most riders under 175 cm to tiptoe at stops.
What brakes does the 2015 Yamaha YZ250FX have?
The 2015 Yamaha YZ250FX uses Single disc. Hydraulic. at the front and Single disc. Hydraulic. at the rear.
What tyre sizes does the 2015 Yamaha YZ250FX use?
The 2015 Yamaha YZ250FX runs 90/90-21 front and 110/100-18 rear tyres. A good selection of sport, touring and all-weather rubber is available in these sizes.
How much oil does the 2015 Yamaha YZ250FX take?
The 2015 Yamaha YZ250FX takes 1.50 litres of engine oil at a full oil and filter change. Always verify against the dipstick or sight glass after filling.
Yamaha YZ250FX Spec Evolution
The Yamaha YZ250FX was produced across 9 model years (2015-2023). The table below highlights the key specifications that changed across the production run - useful whether you are comparing years or tracking down a specific variant.
| Specification |
2015 |
2016 |
2017 |
2018 |
2019 |
2020 |
2021 |
2022 |
2023 |
| Wet Weight |
112.9 kg / 249.0 lbs |
112.9 kg / 249.0 lbs |
112.9 kg / 249.0 lbs |
112.9 kg / 249.0 lbs |
112.9 kg / 249.0 lbs |
111.1 kg / 245.0 lbs |
111.1 kg / 245.0 lbs |
111.1 kg / 245.0 lbs |
111.1 kg / 245.0 lbs |
| Seat Height |
965 mm / 38.0 in. |
965 mm / 38.0 in. |
965 mm / 38.0 in. |
965 mm / 38.0 in. |
965 mm / 38.0 in. |
955 mm / 37.6 in. |
955 mm / 37.6 in. |
955 mm / 37.6 in. |
955 mm / 37.6 in. |
| Fuel Capacity |
7.57 litres / 2.00 gallons |
7.57 litres / 2.00 gallons |
7.57 litres / 2.00 gallons |
7.57 litres / 2.00 gallons |
7.57 litres / 2.00 US gallons |
8.33 litres / 2.20 US gallons |
8.33 litres / 2.20 US gallons |
8.33 litres / 2.20 US gallons |
8.33 litres / 2.20 US gallons |
| Oil Capacity (Quarts) |
0.10 quarts |
0.10 quarts |
0.10 quarts |
0.10 quarts |
1.59 US quarts |
1.59 US quarts |
1.59 US quarts |
1.59 US quarts |
1.59 US quarts |
| Mods from previous model |
- |
- |
- |
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From fender to fender, the YZ250FX is all-new. New engine, improved electronics, new frame, revised suspension, a thinner and lower body, and more—this machine is ready to put riders on top of the podium. |
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Stronger mid- to high-range power. High-spec braking components. |
Stronger mid- to high-range power. High-spec braking components. |
| Ground Clearance (mm) |
325 mm |
325 mm |
325 mm |
325 mm |
325 mm |
320 mm |
320 mm |
320 mm |
320 mm |
| Ground Clearance (in.) |
12.8 inches |
12.8 inches |
12.8 inches |
12.8 inches |
12.8 inches |
12.6 inches |
12.6 inches |
12.6 inches |
12.6 inches |
| Comments |
- |
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New Cylinder Head and Intake System. |
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Power Tuner app |
Power Tuner app. |
Power Tuner app. Selectable Fuel Maps. |
Key Specifications
Engine
Single cylinder, four-stroke
Power
Not published by manufacturer
Torque
Not published by manufacturer
Top Speed
Not published by manufacturer
Weight
112.9 kg / 249.0 lbs
Fuel Capacity
7.57 litres / 2.00 gallons
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Full 2015 Yamaha YZ250FX Specifications
Colours
Team Yamaha Blue/White
Warranty
30 Day Limited Factory Warranty
Ground Clearance (in.)
12.8 inches
Ground Clearance (mm)
325 mm
Seat Height
965 mm / 38.0 in.
Wheelbase
1,466 mm / 57.7 in.
Height
1,280 mm / 50.4 in.
Length
2,164 mm / 85.2 in.
Width
826 mm / 32.5 in.
Oil Capacity (l)
1.50 litres
Oil Capacity (Quarts)
0.10 quarts
Fuel Capacity
7.57 litres / 2.00 gallons
Wet Weight
112.9 kg / 249.0 lbs
Engine Type
Single cylinder, four-stroke
Fuel Control
Double Overhead Cams/Twin Cam (DOHC)
Fuel System
Injection
Starter
Electric
Final Drive
Chain
Gearbox
6-speed
Suspension - Front
KYB Speed-Sensitive System
Suspension - Rear
KYB Fully adjustable single shock
Rake
25.0°
Trail
76 mm / 3.0 in.
Wheel Travel - Front
310 mm / 12.2 in.
Wheel Travel - Rear
318 mm / 12.5 in.
Brakes - Front Diameter (in.)
9.8 inches
Brakes - Front Diameter (mm)
250 mm
Brakes - Rear Diameter (in.)
9.6 inches
Brakes - Rear Diameter (mm)
245 mm
Brakes - Front
Single disc. Hydraulic.
Brakes - Rear
Single disc. Hydraulic.
Tyres - Front
90/90-21
Tyres - Rear
110/100-18
Specifications are compiled from manufacturer documentation and cross-referenced
technical sources, and corrected on an ongoing basis.
Spot an error? Let us know.
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