2017 Yamaha WR 250F

Make Model	Yamaha WR 250F
Year	2017
Engine	Four stroke, single cylinder, DOHC, 4 valve Titanium
Capacity	249 cc / 15.2 cu-in
Bore x Stroke	77 x 53.6 mm
Cooling System	Liquid cooled
Compression Ratio	13.8:1
Lubrication	Wet sump
Induction	44 mm Keihin throttle body F.I.
Ignition	TCI: Transistor Controlled Ignition
Starting	Electric / Kick
Clutch	Wet, multiple
Transmission	6 Speed Wide ratio
Final Drive	#520 Chain
Primary Ratio	3.353 (57/17)
Secondary Ratio	3.923 (51/13)
Gear Ratio	1st 2.385 (31/13) 2nd 1.813 (29/16) 3rd 1.444 (26/18) 4th 1.143 (24/21) 5th 0.957 (22/23) 6th 0.815 (22/27)
Frame	Aluminium Bilateral Beam
Front Suspension	48 mm inverted fork, Adjustable
Front Wheel Travel	310 mm / 12.2 in
Rear Suspension	KYB Fully adjustable single shock
Rear Wheel Travel	315 mm / 12.4 in
Front Brakes	Single 270mm floating wave disc 2 piston caliper
Rear Brakes	Single 245mm disc 1 piston caliper
Front Tyre	80/100-21
Rear Tyre	100/100-18
Rake	27.0°
Trail	115 mm / 4.5 in
Dimensions	Length 2165 mm / 85.2 in Width 825 mm / 32.5 in Height 1280 mm / 50.4 in
Wheelbase	1465 mm / 57.7 in
Seat Height	965 mm / 38.0 in
Ground Clearance	325 mm / 12.8 in
Wet Weight	117 kg / 258 lbs
Fuel Capacity	7.5 Litres / 2.0 gal

The DNA of the 2-straight MX & SX Champ YZ250F in a light, great handling bike perfect for enduro riding through tight trails and woods.

At Yamaha we’ve always liked to do things our way. Being different is what makes our bikes so special. And when you take a look at the WR250F’s high-tech ‘reverse’ engine you can see that what may look wrong to some people is right for us!

The WR250F is a gamechanger. A front facing inlet and tuneable fuel-injection system deliver an instant hit of power. And by centralizing mass, the underseat fuel tank and top-mounted airbox design give you ultra-light handling performance.

Featuring a 6-speed gearbox with a special enduro clutch, and running with class-leading suspension, the electric-start WR250F is taking Yamaha back to the front.

We’ve taken our revolutionary YZ four stroke motocross technology and applied it to the enduro world. Rearward slanted engine, reversed cylinder, forward mounted fuel injection and a compact chassis are just some of the key features found on the WR250F. Delivering light, agile handling on tight trails, the WR is also a great choice for the experienced recreational rider too.

- Lightweight, compact and agile 250cc 4-stroke
- Potent fuel injected engine
- Reverse cylinder head with front facing inlet
- Compact aluminium chassis with short subframe
- Enduro clutch with wide ratio 6-speed transmission
- Switch-free electric starter
- Plug in Power Tuner for easy tuning
- Centrally located 7.5 L fuel tank
- Top mounted quickly removable air filter
- Outstanding suspension performance
- Mass centralization for quick directional changes
- 18-inch rear wheel, Metzeler 6 Days Extreme tyres

Revolutionary rearward slanted, liquid-cooled, DOHC 4-stroke power plant with 4 titanium valves based on the YZ250F™, with an added sixth gear and wide ratio transmission, among other modifications, make it perfect for Enduro competition.

Nearly the same bilateral beam frame that is found on the championship winning YZ250F is used on the WR250F™. It places
the engine and fuel tank close to the center mass of the bike for extremely light and nimble handling character.

A Keihin® 44mm throttle body fuel injection system is tuned for Enduro riding ensures smooth throttle response and easy starting in
nearly all conditions. Plus the electric start button reduces rider fatigue.

Industry leading fully-adjustable KYB® spring-type forks with speed sensitive damping and a KYB® rear shock, each tuned with Enduro specific settings.

With a 2 gallon fuel tank, multi-function Enduro computer, 18-inch rear wheel, O-ring chain, skid plate and Enduro spec tires, the WR250F is ready to win right out of the box.

The latest generation YZ250F engine is the inspiration for the WR power plant. A forward mounted 44 mm fuel injection system supplies fuel to the 4-valve cylinder head, while the wrap around exhaust removes the spent charge and centralizes mass at the same time. A couple of items you won’t find on a YZ250F is the WR’s 6-speed transmission, electric starting and radiator cooling fan.

The adjustable KYB suspension found on our YZs is considered by many to be the best in the biz. So, we have added them as well as our Bilateral Beam all aluminum frame to the WR. Adjustable KYB “SSS” forks and piggyback rear shock allow you to tailor suspension settings to match weight, riding style and terrain. While the chassis design centralizes mass for fast, accurate, agile handling.