Easy to use forum for tips, comments, questions and answers: Yamaha YZ 125 discussions

2025 Yamaha YZ125 Monster Energy. Picture credits - Yamaha. Submit more pictures.	Discuss the Yamaha YZ 125 models without registering or logging in. Simply enter questions, comments or answers. We specially welcome comments on technical issues, riders' experiences, tips on styling and performance enhancements and references to tests. You may also sell or request parts.
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Discussion topics for Yamaha YZ 125 motorcycles:

• Shift problems after clutch replacement (By G.luke, 2023-04-26)
• Shifting problem after clutch replacement (By G. Luke, 2023-04-26)
• Front and R Axle size for 2022? Can´t find this info anywhere!!! (By Joni, 2022-08-01)
• Mr (By Smiffy3012, 2022-04-26)
• Piston and rings (By Gary Woz, 2021-12-22)
• Yamaha Handel bar riser (By Hanro Van wyk, 2021-11-04)
• Transmission info (By grw, 2020-07-20)
• coolant and oil (By Kevin, 2019-08-21)
• Carburator (By Dave Morgan, 2018-01-25)
• engine (By nick dtr, 2013-08-12)
  • RE: engine (By YZd, 2014-05-26)
• lowering a 2004 yz125 (By kyle, 2013-07-28)
• this,kid,here. (By this,kid., 2012-11-25)
• help porpblem with my yz125 (By jeff hall, 2012-09-12)
  • RE: help porpblem with my yz125 (By wes r, 2016-05-09)
• Hi! (By Sergio, 2012-08-24)
• Boaring out the 125 (By Hunter rumble, 2012-05-20)
• flavio rosa (By evangelista, 2011-09-30)
• i need info (By Matt, 2011-09-06)
• My Yz 125 2006 (By RiVaSiDe, 2011-02-23)
• small need help (By Damien Desmond, 2011-02-20)
• mr d brockley (By d brockley, 2010-09-23)
• pregunta . (By ariel sepulveda, 2010-08-08)
• yz 125 (By nolan gilo, 2010-08-06)
• Good Dad (By David T. Eiter, 2010-07-16)
• yamaha yz 125 (By steve o, 2010-04-18)
• 02 yz 125 is stuck in gear (By darrell, 2010-03-29)
• what gas? (By cam, 2010-03-08)
• YZ125 2008-09 Rads Louvres (By omecca, 2009-12-30)
• how much (By kane wilson, 2009-11-17)
• radiator hoses (By brijesh, 2009-10-16)
• japhonzey (By japhonzey, 2009-09-30)
• how do i check the oil level in my yz 125? (By chuck, 2009-09-11)
• inquiring on the price (By fc16, 2009-08-21)
• Glenn (By Glenn, 2009-08-08)
• would i be able to ride a 125 (By mischawantsabike, 2009-07-23)
  • RE: would i be able to ride a 125 (By Axel, 2010-04-27)
• nic lewis (By mr, 2009-07-06)
• 125 cc yz (By leike, 2009-05-29)
• YZ 125 street legal? (By Jack, 2009-05-05)
• yamaha 2002 yz 125 monoshock question (By dreamteamer, 2009-05-02)
• fork fluid weight stock for 2007 yz 125 (By LiL SiLeNcE, 2009-04-17)
• chain size (By jm, 2009-04-12)
• Cross Country Rally (By Luis Belaustegui, 2009-04-06)
• Don´t know to much about maintance.. (By Ernie, 2009-03-23)
  • RE: Don´t know to much about maintance.. (By brijesh, 2009-10-16)
• 03 motor fit in 06 frame on YZ 125? (By Robert Holtz, 2009-03-02)
• need to no (By jon austin marin, 2008-12-08)
• oil thru exhaust (By crazydog, 2008-11-11)
  • RE: oil thru exhaust (By brijesh, 2009-10-16)
• cylinder on yz125s (By robbie, 2008-08-05)
• corey (By yamaha, 2008-06-30)
• corey (By yamaha, 2008-06-30)
• RE: yamaha yz 125 (By 02 yz125, 2008-05-06)
• chain (By 02 yz125, 2008-05-06)
• 02yz125 (By justin, 2008-05-06)
• spark plug fouling, brand new bike. (By josh,YZ, 2008-04-24)
• what the hell (By james, 2008-01-06)
• what do you mix your gas ratio 2 and do u run yamalube? (By james, 2008-01-06)
• Sprockets (By Geoff, 2007-12-22)
• Which one? (By Angel S., 2007-11-25)
• yz 125 (By damon, 2007-11-11)
• YZ125 2002 (By Joey Brooks, 2007-08-30)
• should I buy a yz 125 or a crf250r? (By help me, 2007-06-16)
• Trx450 vs yz125 (By Daniel, 2007-05-09)
  • RE: Trx450 vs yz125 (By ricky, 2007-07-16)
  • RE: Trx450 vs yz125 (By yz125 man, 2011-08-01)
• Chris (By Chris, 2007-03-06)
• Gears (By Jonnie, 2007-03-04)
• yz model/year checkups (By leatherface, 2007-03-02)
• leatherface (By milky, 2007-03-02)
• help setup on forks & suspention (By squirt, 2007-02-09)
• Doug (By Doug, 2007-01-11)
• how reliable is the yz125 compared to other motocrosser (By andy, 2007-01-02)
• repair manual (By the yamman, 2006-11-28)
• RPM (By Mr. Susanto, 2006-11-24)
• how much (By norm, 2006-11-15)
• trouble yz 125 (By Oddvar Sv, 2006-09-09)
  • RE: trouble yz 125 (By JACKO 13, 2007-05-05)
• friends yz 125 2004 (By taylor, 2006-08-20)
• yamaha (By murray, 2006-03-09)
• durability (By Blake, 2006-03-07)
• REAR SHOCK????? (By Clayton, 06, 2006-01-06)
• speed (By boby, 2005-12-14)
  • RE: speed (By cannon, 2006-07-13)
  • RE: speed (By Sqwish, 2008-11-04)
• HP? (By PRO, 2005-12-11)
  • RE: HP? (By WWW, 2005-12-11)
• help make a decision (By george, 2005-12-07)
  • RE: help make a decision (By angelo, 2006-11-21)
• looking for new 04 yz 125 (By kyle, 2005-11-26)
• How much do they cost (By Matt, 2005-11-11)
• should i buy (By racerboy, 2005-11-04)
• should i buy (By racerboy, 2005-11-04)
• dtr 125 (By simi, 2005-10-27)
• repair question (By dhh, 2005-10-02)
• repair question (By dhh, 2005-10-02)
  • RE: repair question (By 02 yz125, 2008-05-06)
• What spark plug to use (By da bike, 2005-09-22)
  • RE: i baught this bike. when will i need to buy a new PISTON?? (By Simon, 2007-01-09)
  • RE: What spark plug to use (By rob, 2008-08-05)
  • RE: Yamaha YZ 125 starting problem!!! (By Paul Price, 2013-12-15)
• 05 Yamaha YZ 125 or 05 Honda 150F........? (By travis aguiar, 2005-09-13)
  • RE: 05 Yamaha YZ 125 or 05 Honda 150F........? (By luke, 2006-04-06)
• frame snaped (By childsy, 2005-09-05)
  • RE: frame snaped (By jr, 2011-09-21)
• this bike (By dylan morris, 2005-07-20)
  • RE: this bike (By yyuy, 2005-08-30)
  • RE: this bike (By yyuy, 2005-08-30)
• this bike (By dylan morris, 2005-07-20)
• this bike (By dylan morris, 2005-07-20)
• trasnportation (By pj, 2005-07-03)
  • RE: trasnportation (By da bike, 2005-09-22)
• are yamaha yz125´s road legal)???? (By Joehollis, 2005-06-03)
  • RE: are yamaha yz125´s road legal)???? (By Philawful, 2005-06-14)
• team green (By kelsey 79, 2005-01-28)
  • RE: team green (By I am da YZ man, 2005-02-23)
    • RE: team green (By da bike, 2005-09-22)
    • RE: team green (By milky, 2007-03-08)
  • RE: team green (By da bike, 2005-09-22)
• How fast can they go (By Billy, 2005-01-04)
• front forks (By nathan buerk, 2004-09-15)
  • RE: front forks (By Billy, 2005-01-04)
• 2005 yz125 (By Keagan B. Fox, 2004-08-26)
  • RE: 2005 yz125 (By alain, 2004-10-25)
  • RE: 2005 yz125 (By grindking490, 2005-08-29)
• 2 or 4stroke (?)... that is the question (By RO, 2004-08-03)
  • RE: 2 or 4stroke (?)... that is the question (By grindking490, 2005-08-29)
  • RE: 2 or 4stroke (?)... that is the question (By Blake Gartica, 2010-07-18)
• plug fouling (By jason, 2004-07-23)
  • RE: plug fouling (By I am da YZ man, 2005-02-23)
    • RE: plug fouling (By da bike, 2005-09-22)
    • RE: plug fouling (By rthomso2, 2007-08-09)
    • RE: plug fouling (By Greg, 2009-12-08)
• YAMAHA YZ 125, 2 STROKE (By AJIK - INDONESIA, 2004-07-20)
  • RE: YAMAHA YZ 125, 2 STROKE (By Chris, 2004-09-08)
    • RE: YAMAHA YZ 125, 2 STROKE (By Tim W, 2007-02-13)
      • RE: YAMAHA YZ 125, 2 STROKE (By brijesh, 2009-10-16)
    • On/off Purpose (By aamir, 2007-10-16)
      • RE: On/off Purpose (By brijesh, 2009-10-16)
  • RE: YAMAHA YZ 125, 2 STROKE (By chad, 2004-12-23)
  • RE: YAMAHA YZ 125, 2 STROKE (By corey, 2005-04-21)
  • RE: YAMAHA YZ 125, 2 STROKE (By r wiliknson, 2005-07-14)
  • RE: YAMAHA YZ 125, 2 STROKE (By clint, 2005-11-03)
  • RE: YAMAHA YZ 125, 2 STROKE (By Tomasz, 2015-07-05)
• yamaha yz125 cylinder (By seabass, 2004-07-19)
• yamaha yz125 cylinder (By seabass, 2004-07-19)
• yamaha yz125 cylinder (By seabass, 2004-07-19)
• yamaha yz125 cylinder (By seabass, 2004-07-19)
• yamaha yz125 cylinder (By seabass, 2004-07-19)
• yamaha 125 (By sam chapman, 2004-07-13)
  • RE: yamaha 125 (By Bradels_2k, 2005-08-18)
    • RE: yamaha 125 (By tyler varga, 2006-02-28)
  • RE: yamaha 125 (By Zac Massie, 2005-08-30)
  • RE: yamaha 125 (By Zac Massie, 2005-08-30)
  • RE: yamaha 125 (By luke, 2006-04-06)
  • RE: yamaha 125 (By michael, 2008-02-09)
• ignition timing (By rookie, 2004-06-26)
  • RE: ignition timing (By josh, 2009-03-29)
  • RE: ignition timing (By cwinward, 2011-09-27)
• Top Speed (By Freak, 2004-06-20)
• really stupid question but need help! (By pro surf, 2004-04-20)
  • RE: really stupid question but need help! (By hhhhhhh, 2005-09-22)
• really stupid question but need help! (By uhh ya, 2004-04-20)
  • RE: really stupid question but need help! (By landon, 2005-01-10)
    • RE: really stupid question but need help! (By hhhhh, 2005-09-22)
  • RE: really stupid question but need help! (By dumbass1o1, 2011-06-25)
• speed,hp? (By NN, 2004-04-09)
  • RE: speed,hp? (By NN, 2004-04-17)
  • RE: speed,hp? (By 02 yz125, 2008-05-06)
• road legal (By NN, 2004-04-06)
  • RE: road legal (By hhhhh, 2005-09-22)
• help choosing a bike (By NN, 2003-07-22)
  • RE: help choosing a bike (By choose wisely, 2003-12-23)
  • RE: help choosing a bike (By choose wisely, 2003-12-23)
    • RE: help choosing a bike (By NN, 2003-12-24)
• dabo (By NN, 2003-03-13)
• hp (By NN, 2002-12-09)
  • RE: hp (By NN, 2003-01-26)
  • RE: hp (By NN, 2003-11-25)
  • RE: hp (By TNT, 2004-07-24)
    • RE: hp (By plokk, 2007-08-29)
• top speed yz 125 (By NN, 2002-09-21)
  • RE: top speed yz 125 (By NN, 2002-10-10)
    • RE: top speed yz 125 (By NN, 2003-09-02)
      • RE: top speed yz 125 (By NN, 2004-03-23)
        • RE: top speed yz 125 (By sean, 2004-08-29)
          • RE: top speed yz 125 (By david mckelvey, 2005-03-29)
    • RE: top speed yz 125 (By hhhhhh, 2005-09-22)
  • RE: top speed yz 125 (By bob dylan, 2007-09-02)
    • RE: top speed yz 125 (By nathan, 2007-09-10)
• yamaha yz 125 (By ????, 2002-09-02)
  • RE: yamaha yz 125 (By NN, 2002-09-21)
  • RE: yamaha yz 125 (By NN, 2002-10-22)
    • RE: yamaha yz 125 (By userd5267@aol.com, 2004-04-17)
  • RE: yamaha yz 125 (By da bike, 2005-09-22)
• Yamaha (By Eric, 2002-03-24)
• How much would your yamaha shop give for a honda xr 100 2000 mod (By NN, 2002-02-18)
  • RE: How much would your yamaha shop give for a honda xr 100 2000 (By I am da YZ man, 2005-02-23)
• assman (By assman, 2002-01-23)
  • RE: assman (By NN, 2003-07-14)
    • RE: assman (By hhhhh, 2005-09-22)
    • RE: assman (By rob, 2008-08-05)
  • RE: assman (By hhhhhh, 2005-09-22)

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Discussion forums for individual Yamaha YZ 125 motorcycles:

2025 Yamaha YZ125 Monster Energy  (Cross/motocross, 125 ccm) 2025 Yamaha YZ125   (Cross/motocross, 125 ccm) 2025 Yamaha YZ125X  (Enduro/offroad, 125 ccm) 2024 Yamaha YZ125 50th Anniversary Edition  (Cross/motocross, 125 ccm) 2024 Yamaha YZ125  (Cross/motocross, 125 ccm) 2024 Yamaha YZ125X  (Enduro/offroad, 125 ccm) 2023 Yamaha YZ125  (Cross/motocross, 125 ccm) 2023 Yamaha YZ125 Monster Energy  (Cross/motocross, 125 ccm) 2023 Yamaha YZ125X  (Enduro/offroad, 125 ccm) 2022 Yamaha YZ125  (Cross/motocross, 125 ccm) 2022 Yamaha YZ125 Monster Energy  (Cross/motocross, 125 ccm) 2022 Yamaha YZ125X  (Enduro/offroad, 125 ccm) 2022 Yamaha YZ125 Monster Energy Racing  (Cross/motocross, 125 ccm) 2021 Yamaha YZ125  (Cross/motocross, 125 ccm) 2021 Yamaha YZ125X  (Enduro/offroad, 125 ccm) 2020 Yamaha YZ125  (Cross/motocross, 125 ccm) 2020 Yamaha YZ125X  (Enduro/offroad, 125 ccm) 2019 Yamaha YZ125  (Cross/motocross, 125 ccm)

2018 Yamaha YZ125  (Cross/motocross, 124 ccm) 2018 Yamaha YZ125X  (Enduro/offroad, 124 ccm) 2017 Yamaha YZ125  (Cross/motocross, 124 ccm) 2017 Yamaha YZ125X  (Enduro/offroad, 124 ccm) 2016 Yamaha YZ125  (Cross/motocross, 124 ccm) 2015 Yamaha YZ125  (Cross/motocross, 124 ccm) 2014 Yamaha YZ125  (Cross/motocross, 124 ccm) 2013 Yamaha YZ125  (Cross/motocross, 124 ccm) 2012 Yamaha YZ125  (Cross/motocross, 124 ccm) 2011 Yamaha YZ125  (Cross/motocross, 124 ccm) 2010 Yamaha YZ125  (Cross/motocross, 124 ccm) 2009 Yamaha YZ125  (Cross/motocross, 124 ccm) 2008 Yamaha YZ125  (Cross/motocross, 124 ccm) 2007 Yamaha YZ 125  (Cross/motocross, 124 ccm) 2006 Yamaha YZ 125  (Cross/motocross, 124 ccm) 2005 Yamaha YZ 125  (Cross/motocross, 124 ccm) 2004 Yamaha YZ 125  (Enduro/offroad, 124 ccm) 2002 Yamaha YZ 125  (Cross/motocross, 124 ccm)

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