Yamaha YZ250: review, history, specs

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Yamaha YZ250
1980-Yamaha-YZ250G-Yellow-3565-5.jpg
Manufacturer Yamaha
Also called YZ250FSE - Special Edition, YZ250F 60th Anniversay, YZ250X, YZ250FX, YZ250F, YZ 250 F, YZ 250
Production 1974 - 2019
Class Motocross
Engine single cylinder, four-stroke
Bore / Stroke 77.0mm x 53.6mm
Compression ratio 10.6:1
Torque 34.67 ft/lbs (47.0 Nm) @ 7500RPM
Ignition type cdi
Sparkplug NGK BR8EIX '98-06
NGK BR8EG '83 , '96-97
NGK B9EV '74-81
NGK B9EG '82 , '84-87
NGK B8EG '88-95
Transmission Gear box: 6-speed

Final Drive: chain

Clutch: multiplate wet clutch
Suspension Front: kyb® spring-type fork with speed sensitive damping; fully adjustable
Rear: kyb® single shock; full adjustable
Brakes Front: single disc. hydraulic.
Rear: single disc. hydraulic.
Front Tire 3.00-21 '74-75 , '76 , '77-79 , '80 , '81 , '82
90/90-21 '83 , '84 , '85-86 , '87
80/100-21 '88 , '89-93 , '94-95 , '96-97 , '98-02 , '03-06
Rear Tire 100/90-19 '89-93
110/100-18 '87 , '88
110/90-19 '94-95 , '96-97 , '98-02 , '03-06
140/80-18 '83
4.60-18 '76
4.00-18 '74-75
130/80-18 '84 , '85-86
4.50-18 '77-79
6705 '80 , '81 , '82
Wheelbase 57.72 inches (1466 mm)
Dimensions L 85.2 inches (2164 mm)
W 32.52 inches (826 mm)
H 50.39 inches (1280 mm)
Seat height 37.99 inches (965 mm)
Weight 212.08 pounds (96.2 Kg) (dry), 112.9 kg (wet)
Fuel capacity 2.0 Gallon (7.57 Liters)
Oil capacity 0.4 Gallon (1.50 Liters)
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Manuals Service Manual
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The Yamaha YZ250FX was a single cylinder, four-stroke Enduro motorcycle produced by Yamaha between 2002 and 2019. Max torque was 34.67 ft/lbs (47.0 Nm) @ 7500 RPM.

History[edit]

Yamaha created the very first single-shock, production motocross bike ever. This was the beginning of the Yamaha Monocross machines that changed motocross forever. The YZs of this time were near replicas of "Works Bikes" with their aluminum fuel tanks and light weight, lacking only magnesium engine cases and a few titanium pieces.


Engine[edit]

The engine was a liquid cooled single cylinder, four-stroke. A 77.0mm bore x 53.6mm stroke result in a displacement of just 250.0 cubic centimeters. Fuel was supplied via a double overhead cams/twin cam (dohc).

Drive[edit]

The bike has a 6-speed transmission. Power was moderated via the multiplate wet clutch.

Chassis[edit]

It came with a 90/90-21 front tire and a 110/100-18 rear tire. Stopping was achieved via single disc. hydraulic. in the front and a single disc. hydraulic. in the rear. The front suspension was a kyb® spring-type fork with speed sensitive damping; fully adjustable while the rear was equipped with a kyb® single shock; full adjustable. The YZ250FX was fitted with a 2.0 Gallon (7.57 Liters) fuel tank. The bike weighed just 212.08 pounds (96.2 Kg). The wheelbase was 57.72 inches (1466 mm) long.


1974 YZ250A[edit]

1974 Yamaha YZ250A Hakan Anderson World Championship Replica in Silver
1974 Yamaha YZ250A Hakan Anderson World Championship Replica in Silver
1974 Yamaha YZ250A Hakan Anderson World Championship Replica in Silver
1974 Yamaha YZ250A Hakan Anderson World Championship Replica in Silver
1974 Yamaha YZ250A Hakan Anderson World Championship Replica in Silver
1974 Yamaha YZ250A Hakan Anderson World Championship Replica in Silver
1974 Yamaha YZ250A Hakan Anderson World Championship Replica in Silver



In 1972 Hakan Anderson took a YZ250A to the world motocross championship (and finished second to Joel Robert on his RH72 Suzuki).

  • SERIAL # 431-000101 - 004104

1975[edit]

1975 Yamaha YZ250
1975 Yamaha YZ250 frame
1975 Yamaha YZ250 in Yellow
1975 Yamaha YZ250 in Yellow


  • SERIAL # 483-000101 - 002759

1976[edit]

1976 Yamaha YZ250C in Yellow


  • SERIAL # 509-100101 - 103405

1977[edit]

  • SERIAL # 1W3-000101 - 006520

1978 YZ250[edit]

1978 Yamaha YZ250 in Yellow
1978 Yamaha YZ250 in Yellow
1978 Yamaha YZ250 in Yellow
1978 Yamaha YZ250 in Yellow
1978 Yamaha YZ250 in Yellow
1978 Yamaha YZ250 in Yellow
1978 Yamaha YZ250 in Yellow
1978 Yamaha YZ250E in Yellow
1978 Yamaha YZ250E in Yellow
1978 Yamaha YZ250E in Yellow
1978 Yamaha YZ250E in Yellow
1978 Yamaha YZ250E in Yellow
1978 Yamaha YZ250E in Yellow
1978 Yamaha YZ250E in Yellow
1978 Yamaha YZ250E in Yellow
1978 Yamaha YZ250E in Yellow
1978 Yamaha YZ250E in Yellow
1978 Yamaha YZ250E in Yellow
1978 Yamaha YZ250E in Yellow
1978 Yamaha YZ250E in Yellow
1978 Yamaha YZ250E in Yellow
1978 Yamaha YZ250E in Yellow
1978 Yamaha YZ250E in Yellow
1978 Yamaha YZ250E in Yellow


  • SERIAL # 2K7-000101 - 009850

1979 YZ250F[edit]

1979 Yamaha YZ250F in Yellow
1979 Yamaha YZ250F in Yellow
1979 Yamaha YZ250F in Yellow
1979 Yamaha YZ250F in Yellow
1979 Yamaha YZ250F in Yellow
1979 Yamaha YZ250F in Yellow
1979 Yamaha YZ250F in Yellow
1979 Yamaha YZ250 in Yellow
1979 Yamaha YZ250 in Yellow
1979 Yamaha YZ250 in Yellow
1979 Yamaha YZ250 in Yellow
1979 Yamaha YZ250 in Yellow
1979 Yamaha YZ250 in Yellow
1979 Yamaha YZ250 in Yellow


  • SERIAL # 2X4-000101 - N/A

1980 YZ250G[edit]

1980 Yamaha YZ250G in Yellow
1980 Yamaha YZ250G in Yellow
1980 Yamaha YZ250G in Yellow
1980 Yamaha YZ250G in Yellow
1980 Yamaha YZ250G in Yellow
1980 Yamaha YZ250G in Yellow
1980 Yamaha YZ250G in Yellow
1980 Yamaha YZ250G in Yellow
1980 Yamaha YZ250G in Yellow
1980 Yamaha YZ250G in Yellow
1980 Yamaha YZ250G in Yellow
1980 Yamaha YZ250G in Yellow
1980 Yamaha YZ250 in Yellow
1980 Yamaha YZ250 in Yellow
1980 Yamaha YZ250 in Yellow
1980 Yamaha YZ250 in Yellow


  • SERIAL # 3R4-000101 - ON

1981 YZ250H[edit]

1981 Yamaha YZ250-H in Yellow
1981 Yamaha YZ250-H in Yellow
1981 Yamaha YZ250-H in Yellow
1981 Yamaha YZ250-H in Yellow
1981 Yamaha YZ250-H in Yellow
1981 Yamaha YZ250-H in Yellow
1981 Yamaha YZ250-H in Yellow
1981 Yamaha YZ250-H in Yellow
1981 Yamaha YZ250-H in Yellow


1986[edit]

1986 Yamaha YZ250 in White
1986 Yamaha YZ250 in White
1986 Yamaha YZ250 in White
1986 Yamaha YZ250 in White



2006[edit]

2006 Yamaha YZ250


2007[edit]

2007 Yamaha YZ250



2003 Yamaha YZ250[edit]

2003 Yamaha YZ250

There's no F after the 2002 YZ250 so we're dealing with 2-stroke might, this time. This model year received a lot of improvements, starting with a new, lighter and tougher swingarm and recalibrated suspensions, with more precise travel and providing even more control.

In the engine department, the 2002 Yamaha YZ250 comes with a new cylinder head and combustion chamber, a reshaped exhaust port, and a revised second gear for explosive power deployment. The factory-spec racing clutch lever is adjustable, and the rear master cylinder and discs are also revamped.


2003 Yamaha YZ250F[edit]

2003 Yamaha YZ250F

The 2002 Yamaha YZ250F is definitely not a toy. Of course it can be used for excellent off-road fun and weekend explorations, but it's on the dirt track where it will shine and offer the true measure of its brawn. With its 5-valve cylinder head engine and retooled suspension, the 2002 Yamaha YZ250F offers enhanced handling precision with even lower flex from the all-new frame this model year received.

And even the bodywork is new, adding more to the pleasure of riding this machine. The brakes are also updated, with new discs and more progressive stopping power.


2004 Yamaha YZ250[edit]

2004 Yamaha YZ250

With around 40 years of YZ250 history, it was natural that the 2003 iteration carried on the acclaimed nerve and maneuverability, in a package with received multiple updates for even higher performance and more durability. The forks went up to 48mm and received a new coating for smoother action, and titanium pegs shaved off some more weight.

The 2003 YZ250 receives a new gripper-style seat cover, revised engine internals for a better mid-range power deployment, and an adjustable clutch lever for quick, on-the-fly fine tuning.


2004 Yamaha YZ250F[edit]

2004 Yamaha YZ250F

While the 2-stroke quarter-liter off-road Yamaha machines have set new standards back in the day, here's a new treat for those who want to take their shot at glory. The 2003 YZ250F is blast to ride given its 13,500 rpm redline and revised engine internals. Ready to win races straight from the box, the 2003 YZ250F is equipped with an all-new titanium header for better gas flow and less weight.

The new YZ250F comes with 48mm USD forks and a new triple clamp, new, lighter calipers with aluminum pistons, and titanium footpegs.


2006 Yamaha YZ250F[edit]

2006 Yamaha YZ250F 2006 Yamaha YZ250F

If it's got an F suffix, it's a 4-stroke, so we're looking at a smooth engine powering the 2005 YZ250F. However, this quarter-liter bike is nothing like a tame beast: it packs more power than meets the eye, and thanks to its 5-speed transmission, there's also torque on tap for fast starts on the dirt track and confident uphill strides on forest trails.

2005 brings a lot of engine revisions, and suspension also received massive tweaking for a more balanced performance and predictable steering. The rear caliper is new, and the bike got premium Excel rims, too, complemented by a new flat seat and repackable exhaust.


2006 Yamaha YZ250[edit]

2006 Yamaha YZ250 2006 Yamaha YZ250 2006 Yamaha YZ250

Having received an all-new aluminum frame one year before, the 2005 YZ250 got a little more motocross edge thanks to some more tweaking and a new, hydroformed swingarm. The 48mm fork has also been revised, while the rear suspension got a top-drawer titanium spring, too.

The trim of the 2005 YZ250 includes multiple works-style parts and technologies to allow riders to benefit from the best bang their money can buy. Save for the engine, which is a 2-stroke, the frame is almost identical to that of the 4-stroke machines.


2007 Yamaha YZ250F[edit]

2007 Yamaha YZ250F 2007 Yamaha YZ250F 2007 Yamaha YZ250F 2007 Yamaha YZ250F

The 2007 MY Yamaha YZ250F introduces several revisions aimed at adding even more performance to this light, nimble bike. The frame got some upgrades and tweaks to increase torsional rigidity and make handling more precise, while steering became easier thanks to the revised seat height. Intake redesign matched the engine revisions for better low and mid-range performance, and updated exhaust and ignition systems have also been devised.

The bike is delivered with pro-c;ass pro Taper handlebars, wide titanium pegs, Excel rims and multiple other features "borrowed" from or inspired by the works trim.


2007 Yamaha YZ250[edit]

2007 Yamaha YZ250 2007 Yamaha YZ250 2007 Yamaha YZ250 2007 Yamaha YZ250

The 2007 MY Yamaha YZ250 got a little more power from its 249cc reed-inducted single, with multiple revisions providing better performance for a lot of components, such as the cylinder, power valve system and carburetor. Quick-access clutch and washable air filter make maintenance easier, reducing the time you'll spend in the garage.

The competition-grade MX aluminum frame keeps the bike light and handling precise, while the speed-sensitive fork adds premium damping and compression characteristics to the ride. Add in Excel rims, Sun Star sprockets, Pro Taper bars and more top-drawer parts to get you past the finish line first.


2008 Yamaha YZ250F[edit]

2008 Yamaha YZ250F 2008 Yamaha YZ250F 2008 Yamaha YZ250F 2008 Yamaha YZ250F 2008 Yamaha YZ250F

The 2008 MY YZ250F gets a lot of updates and takes performance one step ahead in the quarter-liter class. Yamaha's 4-stroke 250cc dirt racer gets multiple engine revisions for the new model year, and they include a new piston, new mapping, a lighter fork and much more.

The upgrades were focused on improved performance and lighter weight, with even the carburetor receiving some tweaks, as well. Adjustable levers, new suspension and frame elements, a redesigned brake pedal, and new, wider pegs are also part of the upgrades list.


2008 Yamaha YZ250[edit]

2008 Yamaha YZ250 2008 Yamaha YZ250 2008 Yamaha YZ250 2008 Yamaha YZ250 2008 Yamaha YZ250

The 2008 MY YZ250 is the perfect choice of you want to show someone how evil can a quarter-liter 2-stroke machine can be. The machine is infused with the best features of its 4-stroke siblings, and loaded with works-derived technologies, such as a titanium rear shock spring, aluminum frame, a new front rotor and twin piston caliper, Pro taper bars, an adjustable 48mm fork, quick-adjust clutch lever and a redesigned brake lever, as well.

The biggest 2-stroke off-road machine has just gotten better, and this calls for some hard riding, showing your friends who's the boss of the dirt track.


2009 Yamaha YZ250F[edit]

2009 Yamaha YZ250F 2009 Yamaha YZ250F 2009 Yamaha YZ250F 2009 Yamaha YZ250F 2009 Yamaha YZ250F

The 2009 MY YZ250F is the 4-stroke sibling of the acclaimed YZ250, and is a quarter-liter competition-grade bike which packs much more fun than meets the eye. New for this model year are the revised 13.5:1 compression and a new clutch design meant to provide lighter pulling and impeccable performance. Race-derive engine components and suspensions, premium controls and exhaust and many more similar details make the YZ250F a bike that's ready to start winning races right from the box.


2009 Yamaha YZ250[edit]

2009 Yamaha YZ250 2009 Yamaha YZ250 2009 Yamaha YZ250 2009 Yamaha YZ250 2009 Yamaha YZ250

Only those who have ridden a 2-stroke quarter liter off-road machine know the adrenaline rush the amazing power and torque combined with a light weight brings... the rest are about to find out. If real-life racing sensations are one of the things you're looking for, then throwing a leg over the 2009 MY YZ250 is the natural thing to do.

The bike's seat was revised for better support and freedom of movement, while other components have been updated, with lower weight and enhanced performance. The bike also got a new anodized chain for this MY, but new wave rotors in the front and rear are also on the menu, as well as a new, revalved fork.


2010 Yamaha YZ250[edit]

2010 Yamaha YZ250 2010 Yamaha YZ250 2010 Yamaha YZ250 2010 Yamaha YZ250

A 2-sstroke quarter-liter machine like the 2010 MY YZ250 is a true weapon in the hands of a skilled rider. The engine delivers explosive power as the throttle is twisted and the brawn of this lightweight machine can strike fear in the minds of the faint-hearted. The aluminum frame uses inverted Kayaba forks and a works-derived rear suspension, both adjustable and capable to deliver first-class performance to the discerning rider.

Little has been improved over the previous edition, as it looks like Yamaha's current recipe is a successful one.


2010 Yamaha YZ250F[edit]

2010 Yamaha YZ250F 2010 Yamaha YZ250F 2010 Yamaha YZ250F 2010 Yamaha YZ250F

The F in 2010 MY YZ250F's name indicates we're dealing with the 4-stroke version of the quarter-liter engine. Basically, the upgraded frame and suspensions of the YZ250 have been mated to a new engine. The looks of the YZ250F have been upgraded, with more aggressive graphics, while the engine also received a massive update, with many new components and revised ones, all contributing to more power at the rider's fingertips.

The 5-speed transmission was also upgraded, together with the ignition, radiators, headers, frame and all. The 2010 MY YZ250F is all-new, just like the performance is higher.


2011 Yamaha YZ250F[edit]

2011 Yamaha YZ250F 2011 Yamaha YZ250F

The 2011 MY YZ250F introduces premium 4-stroke competition-grade machinery to the skilled rider. The engine is a strong puller, but is much smoother than its 2-stroke counterpart, and thanks to the careful weight management, it doesn't make the YZ250F a heavy load. The bike is really easy to flick without massive effort from the rider, retaining exceptional ground tracking capabilities worth of a race bike.

Adjustable suspensions, optimized mass and top-drawer titanium valves for the engine add to the overall performance specs of this race-winning quarter-liter beast.


2011 Yamaha YZ250[edit]

2011 Yamaha YZ250 2011 Yamaha YZ250

The 2011 YZ250 is a competition quarter-liter 2-stroke bike intended for use by well-trained riders. Thos motorcycle was loaded with premium componentry derived from the factory racing programs, and is capable to deliver top performance in the hands of a skilled rider. The YZ250 arrives ready to race from the box, equipped with Excel rims, a lightweight aluminum frame, top-drawer adjustable Kayaba suspensions, a titanium rear shock spring, racing-grade sprockets, a repackable silencer and jumbo-sized folding, serrated pegs and foot controls.


2012 Yamaha YZ250F[edit]

2012 Yamaha YZ250F 2012 Yamaha YZ250F 2012 Yamaha YZ250F 2012 Yamaha YZ250F 2012 Yamaha YZ250F

The 2012 MY Yamaha YZ250F sports an outstanding throttle response, thanks to new crankshaft webs, new vibration-reducing counterbalancer, new connecting rod, and low-friction piston rings, as well as a new piston, piston pin, and clip assembly that’s over 8% lighter overall than before.

To take full advantage of these advancements, there’s also new CDI mapping and a bigger 39mm carb with freer breathing air cleaner cage. Added to the new frame and suspension refinements, this latest engine gives YZ250F amazing balance – a powerful, light-handling machine with performance that’s accessible to all levels of riders.

The YZ250F has specially-tuned forks and a sturdy yet lightweight frame, created with agility in mind, offering very good fast cornering. Foot pegs and handlebars are adjustable to fit multiple riders and offer them the movement freedom and the most comfortable stance.


2012 Yamaha YZ250[edit]

2012 Yamaha YZ250 2012 Yamaha YZ250 2012 Yamaha YZ250 2012 Yamaha YZ250 2012 Yamaha YZ250

This 2-stroke bike sports an aluminum frame and a smooth close-gear 5-speed gearbox. Together with the upright, forward-slanted design, the YZ250 offers unlimited fun for off-road adventure and all the prerequisites for dirt racing at its possible max.

The 2012 MY Yamaha YZ250 is ready to race out of the crate, complete with a ProTaper aluminum handlebar, titanium foot pegs, gripper seat, and Excel rims. Its lightweight build means extremely easy handling, excellent cornering and less fatigue, granting the rider more possibilities to focus on his capabilities, instead of “fighting” the machine.


2013 Yamaha YZ250F[edit]

2013 Yamaha YZ250F 2013 Yamaha YZ250F 2013 Yamaha YZ250F 2013 Yamaha YZ250F 2013 Yamaha YZ250F

The 2012 Yamaha YZ250F is the right tool for those looking for a smaller dirt bike packed with all the character and technological goodies of the big machines.

The YZ250F was the first 4-stroke 250cc bike on the market and the firs to win 1st to win an international race, the 1st to win an AMA Supercross, and the 1st to take an AMA U.S. Supercross Championship title, as well as the rest to win an AMA National race.

It has simply been built to win, as it sports specially-tuned forks and a sturdy yet lightweight frame, created with agility in mind, offering very good fast cornering. Foot pegs and handlebars are adjustable to fit multiple riders and offer them the movement freedom and the most comfortable stance.


2013 Yamaha YZ250[edit]

2013 Yamaha YZ250 2013 Yamaha YZ250 2013 Yamaha YZ250 2013 Yamaha YZ250 2013 Yamaha YZ250

The 2012 Yamaha YZ250 is ready to race out of the crate, complete with an aluminum handlebar, titanium foot pegs, gripper seat, and Excel rims. Its lightweight build means extremely easy handling, excellent cornering and less fatigue, granting the rider more possibilities to focus on his capabilities, instead of “fighting” the machine.

This 2-stroke bike sports an aluminum frame and a smooth close-gear 5-speed gearbox. Together with the upright, forward-slanted design, the YZ250 offers unlimited fun for off-road adventure and all the prerequisites for dirt racing at its possible max.


2014 Yamaha YZ250F[edit]

2014 Yamaha YZ250F 2014 Yamaha YZ250F 2014 Yamaha YZ250F 2014 Yamaha YZ250F 2014 Yamaha YZ250F

Just like its bigger brother YZ450F, the 2013 Yamaha YZ250F brings a heap of all-net things for the new year model. Starting with the new EFI engine mounted in an all-new aluminum Bilateral Beam frame with a completely new design and specs and down to the revised exhaust, tank and airbox, bodywork and all, the new YZ250F also offer top-level maneuverability for both the dirt track and wilderness trails.

The bike can also be loaded with user-customizable mappings using the accessory Power Tuner and be more compliant with the special nature of various tracks. The frame sits on new KYB air-oil suspensions and they also come with multiple setting options for the best grip and power-to-ground delivery.


2014 Yamaha YZ250[edit]

2014 Yamaha YZ250 2014 Yamaha YZ250 2014 Yamaha YZ250 2014 Yamaha YZ250 2014 Yamaha YZ250 2014 Yamaha YZ250 2014 Yamaha YZ250 2014 Yamaha YZ250 2014 Yamaha YZ250 2014 Yamaha YZ250

The 2013 Yamaha YZ250 carries on the heritage of the bike which won the first-ever World Motocross Championship back in 1973. It retains the 2-stroke principle but the rest of the bike is completely changed, now benefiting from the most advanced technology in the field of MX racing. The chassis is now made in aluminum and rolls with light, cast alloy wheels, USD forks and a Power Valve System for the modern exhaust.

The handling is simply flawless, given the revised suspension settings and chassis sturdiness, while the seat ergonomics have been also updated for good support and maximum freedom of movement.


2016 Yamaha YZ250X[edit]

2016 Yamaha YZ250X 2016 Yamaha YZ250X 2016 Yamaha YZ250X 2016 Yamaha YZ250X 2016 Yamaha YZ250X

Legendary YZ250 249cc liquid-cooled reed-valve-inducted two-stroke engine, a new compression ratio, new exhaust port timing, updated Yamaha Power Valve System (YPVS) timing, and a new model-specific CDI unit – all focused on making a wide, controllable power character ideal for cross-country racing.


2017 Yamaha YZ250F[edit]

2017 Yamaha YZ250F 2017 Yamaha YZ250F 2017 Yamaha YZ250F 2017 Yamaha YZ250F 2017 Yamaha YZ250F

This Yamaha YZ250F comes for 2017 with The compact four-valve cylinder head features revised intake geometry for additional downdraft effect, matched to shorter intake funnel in the airbox, for improved top-end power. Inside the head, more aggressive camshaft profiles and valve springs boost output further, while larger valve seats ensure excellent sealing and reliability.


2017 Yamaha YZ250[edit]

2017 Yamaha YZ250 2017 Yamaha YZ250 2017 Yamaha YZ250 2017 Yamaha YZ250

Yamaha bupd the YZ250 with the same engine 250cc liquid-cooled reed-valve-inducted two-stroke engine is lightweight, compact and features an incredibly wide, hard-hitting powerband. New 270mm front disc brake (up from 250mm) also features a new brake pad material for exceptional stopping power and control for aggressive corner entries.


In Media[edit]


See Also[edit]