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'{{Infobox Motorcycle | name = YZ125 | image = https://share.icloud.com/photos/03aNTmvL2vxFR14asXrxUjDPA | manufacturer = [[Yamaha Motor Company|Yamaha]] | parent_company = | production = Since 1974 | predecessor = | successor = | class = [[Motocross]] | engine = {{cvt|124|cc}} reed valve [[Two-stroke engine|two-stroke]] [[Single-cylinder engine|single]] | power = {{cvt|33.53|hp}}<ref name="MCA"/> | torque = | transmission = 5- or 6-speed [[Sequential manual transmission|sequential manual]] | suspension = Mono-shock, 13 inches travel | brakes = Hydraulic disc | tires = Front: 80/100-21-51M<br />Rear: 100/90-19-57M | top speed = 108,27 | rake_trail = | wheelbase = {{cvt|56.8|in|order=flip}} | length= {{cvt|84.1|in|order=flip}} | width= {{cvt|32.6|in|order=flip}} | height= {{cvt|51.8|in|order=flip}} | seat_height = {{cvt|39.3|in|order=flip}} | dry_weight = {{cvt|190|lb|order=flip}} | wet_weight = {{cvt|208|lb|order=flip}}<ref name=2010specs/> | fuel_capacity = {{cvt|2.1|usgal|order=flip}} | related = [[Yamaha YZ250F]] }} The '''Yamaha YZ125''' is a [[motocross]] [[racing motorcycle]] with a [[Two-stroke engine|two-stroke]] {{cvt|124.9|cc}} [[Engine displacement|displacement]] [[single-cylinder engine]] made by [[Yamaha Motor Company|Yamaha]] since 1974. It is available to the public. For the first two years it was made with dual rear shocks, then changing to a [[monoshock]].<ref>{{cite web |title=MXA's 20 Most Frequently Asked Questions |url=http://www.motocrossactionmag.com/me2/dirsect.asp?sid=F42B9D67B8404E24AA0EF9B32A75BA62&nm=FAQ%27S |archive-url=https://web.archive.org/web/20100227054517/http://www.motocrossactionmag.com/me2/dirsect.asp?sid=F42B9D67B8404E24AA0EF9B32A75BA62&nm=FAQ%27S |url-status=dead |archive-date=27 February 2010 |website=MotoCross Action Magazine |access-date=6 May 2019}}</ref> The YZ125 has been ridden to five AMA National Motocross Championships, and multiple AMA Regional Supercross Championships.<ref>{{Cite web |url= http://www.motocrossactionmag.com/me2/dirsect.asp?sid=9945527E1D6A4953ACE23BB700C838FF&nm=EVERY+CHAMP |title= EVERY CHAMP {{!}} Motocross Action |access-date= 2007-05-09 |archive-url= https://archive.today/20120905024841/http://www.motocrossactionmag.com/me2/dirsect.asp?sid=9945527E1D6A4953ACE23BB700C838FF&nm=EVERY+CHAMP |archive-date= 2012-09-05 |url-status=dead }}</ref> In 2001, Yamaha released a bike designed to complement the YZ125, the four-stroke YZ250F. The two bikes shared a rolling chassis and are eligible to compete in the same racing class. The YZ250F has a slight horsepower advantage.<ref name="DBM">{{cite web |title=10 Things You Might Not Know About The YZ125 |url=https://dirtbikemagazine.com/10-things-you-might-not-know-about-the-yz125/ |website=Dirt Bike Magazine |access-date=6 May 2019}}</ref> The YZ125 has a {{cvt|124|cc}} [[Reed valve#Two-stroke engines|reed valve-inducted]] [[two-stroke engine]]. It was air cooled from 1974 to 1980, and liquid cooled since 1981. It has a [[Mikuni (company)|Mikuni]] 38&nbsp;mm TMX series [[carburetor]].<ref name="MCA2016">{{cite web |title=2016 YAMAHA YZ125 Two-Stroke Race Test: Everything You Need To Know |url=https://motocrossactionmag.com/mxa-2016-race-test-yamaha-yz125/ |website=MotoCross Action Magazine |access-date=6 May 2019 |date=18 April 2016}}</ref> The engine produces {{cvt|35|hp|}}.<ref name="MCA" /> The YZ125 has been built with five- or six-speed [[sequential gearbox|manual sequential gearbox]] depending on model year. The 2005 model has a [[Constant-mesh gearbox|constant-mesh]], wet, multiple-disc coil-spring [[clutch]]. From 1973 through 2004, the YZ125 had a single backbone frame made from steel. It generally averaged from {{cvt|176|to|198|lb}}.{{cn|date=September 2020}} For the 2005 year, Yamaha switched to a single backbone frame constructed from an aluminum alloy. This frame material change dropped the dry weight to {{cvt|190|lb}}.{{cn|date=September 2020}} For 2008 models, the wheel assemblies and front fork suspension were redesigned, yielding additional weight savings, making wet weight, no gas sub-200&nbsp;lb. Aluminum-framed YZ125s are notably "flickable" and sometimes this trait is seen as a drawback since they tend to become more difficult to control on rough surfaces.<ref name=2010specs/> The YZ125 used a conventional telescopic fork tube through 1988, then in 1989, added the first upside-down fork. A very well knows the amount of riders have chosen this as their go-to bike, such as AMA Champ Dom Barbuto and his brother Nick Barbuto, and X-Games medalist Kyle Ford. Also, 11-time Nationals winner and rival of Eli Tomac, Richard Rich BRUTAL CROSS BIKE!!!!!!! MAN, IF YOU DON'T DO ANYTHING, YOU CAN BUY A YZ125 AND GO RIDEEEEE!!!!!!! ==References== {{reflist|refs= <ref name="MCA">{{cite web |title=Two-Stroke Shootout: KTM 125SX Vs. YAMAHA YZ25 |url=https://motocrossactionmag.com/2016-mxa-125-two-stroke-shootout-ktm-125sx-vs-yamaha-yz125/ |website=Motocross Action Magazine |access-date=6 May 2019 |date=19 November 2016}}</ref> <ref name=2010specs>{{citation |url=http://www.yamaha-motor.com/sport/products/modelspecs/31/0/specs.aspx |publisher=Yamaha Motor Corporation, USA |title=2010 YZ125 Specs |access-date=2009-12-05 |url-status=dead |archive-url=https://web.archive.org/web/20091125205822/http://www.yamaha-motor.com/sport/products/modelspecs/31/0/specs.aspx |archive-date=2009-11-25 }}</ref> }} ==External links== * {{Official website|http://www.yamaha-motor.com/sport/products/modelhome/31/0/home.aspx}} {{Yamaha motorcycles}} {{Yamaha motorcycles timeline}} [[Category:Yamaha motorcycles|YZ125]] [[Category:Off-road motorcycles]] [[Category:Motorcycles introduced in 1974]] [[Category:Two-stroke motorcycles]]'