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{{DISPLAYTITLE:{{PAGENAME}}: review, history, specs}}
{{DISPLAYTITLE:{{PAGENAME}}: review, history, specs}}
{{Motorcycle
{{Motorcycle
|name            = Yamaha YZ250
|name            = '''Yamaha YZ250'''
|photo            = 1980-Yamaha-YZ250G-Yellow-3565-5.jpg
|photo            = 1980-Yamaha-YZ250G-Yellow-3565-5.jpg
|aka              = YZ250FSE - Special Edition, YZ250F 60th Anniversay, YZ250X, YZ250FX, YZ250F, YZ 250 F, YZ 250
|aka              = YZ250FSE - Special Edition, YZ250F 60th Anniversay, YZ250X, YZ250FX, YZ250F, YZ 250 F, YZ 250
|manufacturer    = Yamaha
|manufacturer    = [[Yamaha]]
|parent_company  =
|parent_company  =
|production      = 1974 - 2019
|production      = 1974 - 2019
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|predecessor      =
|predecessor      =
|successor        =
|successor        =
|class            = Motocross
|class            = [[Motocross]]
|engine          = single cylinder, two-stroke
|engine          = single cylinder, two-stroke
|bore_stroke      =  
|bore_stroke      =  
|compression      =  
|compression      =  
|top_speed        =85 mph
|top_speed        =
|power            = 48.8 hp
|power            = 48.8 hp
|torque          = 32 ft/lbs  
|torque          = 32 ft/lbs  
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|fuel_capacity    = 2.0 Gallon (7.57 Liters)
|fuel_capacity    = 2.0 Gallon (7.57 Liters)
|oil_capacity    = 0.4 Gallon (1.50 Liters)
|oil_capacity    = 0.4 Gallon (1.50 Liters)
|recommended_oil= Yamalube 10w-40
|fuel_consumption =
|fuel_consumption =
|turning_radius  =
|turning_radius  =
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|competition      = [[Honda CR250R]]<br />[[Kawasaki KX250]]<br />[[Suzuki RM250]]
|competition      = [[Honda CR250R]]<br />[[Kawasaki KX250]]<br />[[Suzuki RM250]]
}}
}}
The '''[[Yamaha]] YZ250''' was a single cylinder, [[two-stroke]] [[motocross]] [[motorcycle]] produced by [[Yamaha]] between 1974 and 2019. It is one of the last two-stroke 250cc bikes still in production.  Yamaha produces a four-stroke version made to compete with this version in the [[Yamaha YZ400F|YZ400F]]/[[Yamaha YZ426F|YZ426F]]/[[Yamaha YZ450F|YZ450F]].  The similarly named [[Yamaha YZ250F]] is intended to compete with the [[Yamaha YZ125]].
The '''[[Yamaha]] YZ250''' was a single cylinder, [[two-stroke]] [[motocross]] [[motorcycle]] produced by [[Yamaha]] between 1974 and 2019. It is one of the last two-stroke 250cc bikes still in production.  Yamaha produces a four-stroke version made to compete with this version in the [[Yamaha YZ400F|YZ400F]]/[[Yamaha YZ426F|YZ426F]]/[[Yamaha YZ450F|YZ450F]].  The similarly named [[Yamaha YZ250F]] is intended to compete with the [[Yamaha YZ125]].


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==Engine==
==Engine==
The engine was a air cooled, later liquid cooled single cylinder, two-stroke.
The engine was a [[liquid cooled]] single cylinder, two-stroke.


==Drive==
==Drive==
The bike has a 5-speed transmission. Power was moderated via the multiplate wet clutch.
The bike has a 6-speed transmission. Power was moderated via the multiplate wet clutch.


==Chassis==
==Chassis==
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==Third Generation==
==Third Generation==
{{Motorcycle
{{Motorcycle
|name            = Yamaha YZ250 LC
|name            = '''Yamaha YZ250 LC'''
|photo            = 1986-Yamaha-YZ250-White-0.jpg
|photo            = 1986-Yamaha-YZ250-White-0.jpg
|aka              =  
|aka              =  
|manufacturer    = Yamaha
|manufacturer    = [[Yamaha]]
|parent_company  =
|parent_company  =
|production      = 1986 - 1993
|production      = 1986 - 1993
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|predecessor      =
|predecessor      =
|successor        =
|successor        =
|class            = Motocross
|class            = [[Motocross]]
|engine          = 249[[cc]] liquid-cooled single cylinder, two-stroke
|engine          = 249[[cc]] liquid-cooled single cylinder, two-stroke
|bore_stroke      = 68 x 68.8 mm
|bore_stroke      = 68 x 68.8 mm
|compression      = 9.0 ~ 10.8 : 1
|compression      = 9.0 ~ 10.8 : 1
|top_speed        =85 mph
|top_speed        =
|power            = 48.8 hp
|power            = 48.8 hp
|torque          = 32 ft/lbs  
|torque          = 32 ft/lbs  
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|bore_stroke      =  
|bore_stroke      =  
|compression      =  
|compression      =  
|top_speed        =85 mph
|top_speed        =  
|zero_to_60      =
|zero_to_60      =
|quarter_mile    =  
|quarter_mile    =  
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|oil_capacity    =  
|oil_capacity    =  
|oil_filter      =
|oil_filter      =
|recommended_oil  =Yamalube 10w-40
|recommended_oil  =  
|fuel_consumption =  
|fuel_consumption =  
|competition      =
|competition      =
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==Generation (2002 - 2004)==
==Generation (2002 - 2004)==
{{Motorcycle
{{Motorcycle
|name            = Yamaha YZ250
|name            = '''Yamaha YZ250'''
|photo            = Yamaha-yz250-2003-2003-0 lKQcu8V.jpg
|photo            = Yamaha-yz250-2003-2003-0 lKQcu8V.jpg
|aka              =  
|aka              =  
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|bore_stroke      =  
|bore_stroke      =  
|compression      =  
|compression      =  
|top_speed        =85 mph
|top_speed        =  
|zero_to_60      =
|zero_to_60      =
|quarter_mile    =  
|quarter_mile    =  
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|oil_capacity    =  
|oil_capacity    =  
|oil_filter      =
|oil_filter      =
|recommended_oil  =Yamalube 10w-40
|recommended_oil  =  
|fuel_consumption =  
|fuel_consumption =  
|competition      =
|competition      =
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==Generation (2005 - )==
==Generation (2005 - )==
{{Motorcycle
{{Motorcycle
|name            = Yamaha YZ250
|name            = '''Yamaha YZ250'''
|photo            = yamaha-yz250-2006-2006-2.jpg
|photo            = yamaha-yz250-2006-2006-2.jpg
|aka              =  
|aka              =  
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|bore_stroke      =  
|bore_stroke      =  
|compression      =  
|compression      =  
|top_speed        =85 mph
|top_speed        =  
|zero_to_60      =
|zero_to_60      =
|quarter_mile    =  
|quarter_mile    =  
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|oil_capacity    =  
|oil_capacity    =  
|oil_filter      =
|oil_filter      =
|recommended_oil  =Yamalube 10w-40
|recommended_oil  =  
|fuel_consumption =  
|fuel_consumption =  
|competition      =
|competition      =
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===2012 Yamaha YZ250===
===2012 Yamaha YZ250===
<gallery mode='packed-hover'>
[[File:yamaha-yz250-2012-2012-4_mJih21h.jpg|600px|2012 Yamaha YZ250]]
File:yamaha-yz250-2012-2012-4_mJih21h.jpg|600px|2012 Yamaha YZ250
[[File:yamaha-yz250-2012-2012-3_0dh5nvJ.jpg|600px|2012 Yamaha YZ250]]
File:yamaha-yz250-2012-2012-3_0dh5nvJ.jpg|600px|2012 Yamaha YZ250
[[File:yamaha-yz250-2012-2012-2_VxP8eGE.jpg|600px|2012 Yamaha YZ250]]
File:yamaha-yz250-2012-2012-2_VxP8eGE.jpg|600px|2012 Yamaha YZ250
[[File:yamaha-yz250-2012-2012-1_IJEjDfD.jpg|600px|2012 Yamaha YZ250]]
File:yamaha-yz250-2012-2012-1_IJEjDfD.jpg|600px|2012 Yamaha YZ250
[[File:yamaha-yz250-2012-2012-0_xxTZJPi.jpg|600px|2012 Yamaha YZ250]]
File:yamaha-yz250-2012-2012-0_xxTZJPi.jpg|600px|2012 Yamaha YZ250
</gallery>


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.
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.
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===2013 Yamaha YZ250===
===2013 Yamaha YZ250===
<gallery mode='packed-hover'>
[[File:yamaha-yz250-2013-2013-4_U2Ec9ca.jpg|600px|2013 Yamaha YZ250]]
File:yamaha-yz250-2013-2013-4_U2Ec9ca.jpg|600px|2013 Yamaha YZ250
[[File:yamaha-yz250-2013-2013-3_2pBi1Ol.jpg|600px|2013 Yamaha YZ250]]
File:yamaha-yz250-2013-2013-3_2pBi1Ol.jpg|600px|2013 Yamaha YZ250
[[File:yamaha-yz250-2013-2013-2_DTwazXN.jpg|600px|2013 Yamaha YZ250]]
File:yamaha-yz250-2013-2013-2_DTwazXN.jpg|600px|2013 Yamaha YZ250
[[File:yamaha-yz250-2013-2013-1_qLiOIek.jpg|600px|2013 Yamaha YZ250]]
File:yamaha-yz250-2013-2013-1_qLiOIek.jpg|600px|2013 Yamaha YZ250
[[File:yamaha-yz250-2013-2013-0_kIp6aY3.jpg|600px|2013 Yamaha YZ250]]
File:yamaha-yz250-2013-2013-0_kIp6aY3.jpg|600px|2013 Yamaha YZ250
</gallery>


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.
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.
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===2016 Yamaha YZ250X===
===2016 Yamaha YZ250X===
<gallery mode='packed-hover'>
[[File:yamaha-yz250-2016-4.jpg|600px|2016 Yamaha YZ250X]]
File:yamaha-yz250-2016-4.jpg|600px|2016 Yamaha YZ250X
[[File:yamaha-yz250-2016-3.jpg|600px|2016 Yamaha YZ250X]]
File:yamaha-yz250-2016-3.jpg|600px|2016 Yamaha YZ250X
[[File:yamaha-yz250-2016-2.jpg|600px|2016 Yamaha YZ250X]]
File:yamaha-yz250-2016-2.jpg|600px|2016 Yamaha YZ250X
[[File:yamaha-yz250-2016-1.jpg|600px|2016 Yamaha YZ250X]]
File:yamaha-yz250-2016-1.jpg|600px|2016 Yamaha YZ250X
[[File:yamaha-yz250-2016-0.jpg|600px|2016 Yamaha YZ250X]]
File:yamaha-yz250-2016-0.jpg|600px|2016 Yamaha YZ250X
</gallery>


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.
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.
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===2017 Yamaha YZ250===
===2017 Yamaha YZ250===
<gallery mode='packed-hover'>
[[File:yamaha-yz250-2017-3_dVrIHqX.jpg|600px|2017 Yamaha YZ250]]
File:yamaha-yz250-2017-3_dVrIHqX.jpg|600px|2017 Yamaha YZ250
[[File:yamaha-yz250-2017-2_Xgr2GBu.jpg|600px|2017 Yamaha YZ250]]
File:yamaha-yz250-2017-2_Xgr2GBu.jpg|600px|2017 Yamaha YZ250
[[File:yamaha-yz250-2017-1_2DEBe7Y.jpg|600px|2017 Yamaha YZ250]]
File:yamaha-yz250-2017-1_2DEBe7Y.jpg|600px|2017 Yamaha YZ250
[[File:yamaha-yz250-2017-0_DkG7Vt2.jpg|600px|2017 Yamaha YZ250]]
File:yamaha-yz250-2017-0_DkG7Vt2.jpg|600px|2017 Yamaha YZ250
</gallery>


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.
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.

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