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Found 188 results

  1. I am restyling an 05 yz125, I ordered cycra restyle plastics for the bike, and I do not know how to find out the year of the plastics since they're specifically made to fit on my bike. I am so confused on how to get graphics lol if anyone can help that'd be great.
  2. Hey Everyone, I am having an issue with a hard to pull clutch on a YZ125. I have inspected the lever, all good. I have tried to lube the cable, check. Next, I pulled the clutch cover off and uninstalled the clutch basket, inspected the springs, etc. I torqued the springs/bolts back down to the 7.25 ft/lbs, reassembled and still pretty much the same pull force is needed. Should I just purchase a new clutch cable and hope that fixes it? It is much harder to pull than the last YZ125 we just sold. It works just fine, but just harder to pull. Thanks in Advance.
  3. I got a full engine rebuild done 3 hours ago now there's scratches on the piston by the exhaust port. What could the cause be?
  4. im am 13, 100 pounds (with gear) and currently ride a 08 yz85 and am looking to move up. first off im not rich and i have to pay for my own stuff, i am not going to be racing i mainly just ride track and trails here and there also some desert sinlge track. i am debating on witch i should get next a yz125 or a yz250f. i can handle the power i have riddden both a 125 2 stroke and a 250f and i basically fell in love with both so i am in a predicament on what whould be best. anything helps
  5. I am looking for a YZ125 and have found a 99 for 1300 and an 03 for 1600 both in pretty nice condition. Obviously going to negotiate the prices down however I was wondering which one you guys would suggest. Ive been doing research and know that the 03 is lighter with a modified frame though it has a 5 speed. The 99 motor is well liked for the power and reliability. I will be doing strictly trail riding so whats the better option here?
  6. I just got back from a weekend of riding and noticed my fork seal leak got really bad and is dripping oil. I am going to replace it but for now is it bad to ride on bad fork seals? For when i replace them how much can i expect to spend on supplies if I do it myself, and how much will a shop charge me
  7. Hi, I'm looking to buy either a yz125 or yz250 upgrading from a yz85. I'm 16 years old, i'm 6'2" and weigh about 145lbs. I'm upgrading from the yz85 because the frame is too small and I've outgrown it, plus its a little weak. I would like to get a yz250, but they are pretty pricey and my budget tops out about $1500. I found a good deal on a 2009 yz125 ($1300), but I'm wondering if there isn't enough power? I'm not really going to be racing, I might go to the local track for practice every once in a while, but nothing crazy. What do you guys think? yz125 enough power for a 145lbs teenager? Or is the yz250 the better option because of the 125's lack of bottom end power (i'm used to this with the 85)? Thanks!
  8. I just rebuilt my kids 2013 YZ-125 that I had the cylinder professionally oversized by 2mm from Millenium Technologies last year. It made it a 134cc. I just rebuilt the motor for this season, I had MT-LLC re-plate the cylinder and match it to a new piston. I also had them deck the head for race gas only. My sqush is at .038. I plan on running race gas (sunoco 110 non oxygenated) at 32:1 with Redline (which is what I ran all last year). Here is where my concern begins. I did a compression test and it is right at 220psi. Will I be eating main bearings quickly? Will this motor hold up for a season with exceptional maintenance? Should I advance my timing about .002 to compensate for the high compression and reduce the pressure on the rod? I was told to simply double the base gasket and it will work. IF I do that, What will that do with the timing and jetting? Just a little out of my league with this much psi..... Please help with ideas. Thanks.
  9. Hey sick kunts! I was wondering for any advice on what bike I should get, I'm going to get back into riding. I'm going to purchase a bike of Craigslist, one that is relativly decent. I'm 20 years old and I'm 6,2 190 I was wondering if I should go with a yz 125 or yz 250, I havnt rode since 9th grade when we had to sell my bike before moving to pa but the last bike I rode was a kx85. Thanks
  10. Hi there ! I'm currently looking for a used 125cc 2 strokes between 2000 and 2007. ME: I'm form Québec/Canada, I'm a 5.4 foot tall, i weight 130, i mostly ride trails(on dirt, sand, rocks) but i really like to jump, climb on some small rocks(a bit like trial) , and i do ride enduro style too. I CURRENTLY RIDE: an XR200a 1984 (with absorber) i really like that bike, it's undestructible and i can ride for ages with one tank. The downsides are the suspensions and the speed limit. I WANT: a light, 2stroke, 125cc, which i can use all around. I want to pay max 3000$cad. I did some research and found that the YZ 125 is a pretty notorious bike, and more notorious are the 2006+ because of the suspension, motor, weight, improvements. That being said, i'm not close for any other brand. The one thing i'm concerned with is the gas consumption. I can do 2, 3 rides with my XR(4stroke, of course) before it got bone dry. I don't ask for the same results but i just don't want it to run out after 1 1/2hr -2hrs ride. I would really like a bike i can easily find parts. During my reseach i fell on a steel vs ali frame thread, i'm also concerned about it. Being a Vintage dirtbike rider ATM i can say i love the way it feel. I tried my friend 2017 TE300 and it was great but it felt like the bike was SOOOOOO DAMN STIFF !! OMG, myself being small and light, i wasn't comfortable AT ALL on it. I don't think i could see a difference between a steel and an ali frame and i wonder if i could see a difference between 2002 Yz vs 2007 YZ's suspension too ?? HOW MUCH should i pay for a STOCK bike between 2000 and 2007 ?? (i know there can be that bike which as been redone and all, but just overall stock ) Anyway, i probably forget to write some lil thing but overall this is it, i'm looking for a 125, 2t !!! Thanks you very much for your time ! have a nice day
  11. Hey guys I was wondering what bike I should get I havnt rode since I was in 7th grade but I had a kx 85 so I was experienced with riding I could pin the bike on tracks so I'm not completely new to riding now I'm 6,2 190 I was contemplating what bike to get, should I go with a yz 125 or should I go with a yzf450, I would never sell the 450 prob have it forever thank you tell me your opinions plz!!
  12. Hey guys, I recently sold my 2001 YZ 125, and bought multiple YZ's... a 1998, a 2001, and a 2002. I rode all 3 and I know for a fact the 1998 YZ is the most quick. When you throttle it, it will go. The 2001 YZ 125 is average. Lastly, the 2002 is really fast (fastest YZ 125 I've ever ridden), but has no compression. It's weird that it has no compression, yet it's the fastest. I'm not sure what the PO's did with the carb or piston on the 1998 and 2002. I am selling the 1998 and the 2001, but keeping the 2002 YZ 125 since it has the updated plastics and stuff. Anyways, the suspension on the bikes are all garbage, and since I'm selling two, I don't want to fix it. But for my bike, how can I fix it? It is extremely bouncy, and when I go over a small hole, I literately jump 1 foot out of my seat and land really hard. If I harden the shocks, it will have no rebound and will also throw me off. What should I do? Also, shouldn't I set it up to my weight? Do I set the sag or does it need to get set up by a company like Pro Circuit? I would probably leave the front forks the way it is, unless it's required. Let me know, thanks.
  13. I have a 2003 yz125, it’s excessively dripping oil out of the silencer and where it meets the exhaust, there’s a lot of oil, it’s throwing out huge amounts of smoke and starting to foul out plugs. I’ve already replaced the clutch side seal (I’m almost positive it’s coming from the transmission oil) and repacked the exhaust. After that it seemed to stop or at least slowed down. After sitting for a couple months I changed the transmission oil once again and started it up, I let it warm up and didn’t feel like it had the normal amount of power and kinda bogged down, we revved the hell out of it and it cleared up and felt normal. We loaded up and drove out the the desert and I started it with the choke on and let it idle, after about a minute it died and wouldn’t turn over at all. We came back home and took out the spark plug and it was fouled replaced it and it ran again. The next day the same thing happened. Any thoughts on what I should do? The engine was recently rebuilt and I only use it for trail riding and run about a 40:1 ratio. Thanks
  14. Please help! I recently bought a Yz250f and have not been able to start it, it Has spark, but there are many issues with the carby which I wanna rule out before I leap into a rebuild, ( I want to avoid a rebuild if possible as I’m low on cash). The carby at the moment is a complete mess so the usual steps to fixing it might not work. So here’s the deal with the carb: - It’s leaking fuel from overflow ( really fast! ) and when I mean really fast, I mean it emptied my fuel tank in 2 mins. - It has a slow leak coming from somewhere under the float bowl - the air fuel screw is not adjusted correctly - I don’t know if the electrics work on it either - I don’t even know if it’s shooting fuel into the cylinder or not, as after kicking it a couple times and it’s not starting I remove the spark plug and it’s still dry. ( I tried putting fuel directly into cylinder from the spark plug hole but the bike still wouldn’t start) okay so I know it’s a lot but I’m not expecting anyone to answer every single question themselves. If each person could tackle whatever problem they know it would help heaps. Also just want to know what Order to fix things in as I can’t do air fuel until the bike is running and it won’t run unless I stop the leaking and get it to spray fuel into the cylinder. And buying a new carby is not an option ( I’ve got $40 to my name atm). Please help guys thanks.
  15. I just recently went with a friend to purchase an '01 YZ125. The bike had just had an engine rebuild and a clutch replacement. I'm new to two stokes, and this is the first one I have ever ridden/worked on, so this is all new to me. When we were in the process of test riding the bike, I noticed that every time we fired it up, pulled the clutch in, and shifted into first gear, the bike would stall. The (previous) owner had said that the bike probably wasn't warmed up yet, and "sometimes" did that when it was cold. I had to give it about quarter throttle when I shifted into first gear to get moving. I also noticed the clutch was pretty stiff, but that could be due to new springs? The bike shifted through all the gears fine, and the clutch seemed to work when I shifted back into first and came to a stop (bike didn't stall). Any ideas on how to fix this? I'm going to disassemble the clutch and check it out. We just got the bike, so I haven't done much testing/diagnosis yet. All I know is that my four stroke never stalls when put into first, even if it's not warmed up at all.
  16. Hey guys it's me again. I just want to say that I am 6 feet tall but my YZ125 is really big and I can't really put my feet down. I can touch the ground (like tippi-toe), and I can fully put one foot down if I lean. Is that okay or should I downgrade?
  17. I’m 12 years old about to be 13, I stand at 5’8 and weigh 147 pounds. I race a yz85 and I feel like the bike is very small and I’m too big for it. I also feel really big on the supermini/ big wheel. I don’t know if I should get a 125 or a 250f or what. Please leave some feedback on if u think I’m too big for a 85 and am ready to move and and which bike do u think i should get?? (I’ll throw in some pics of me on a 85 and me on a 125) (the first 4 r me on a 125 after that it’s me on 85))
  18. Not that many things on here regarding fuel and the Yz125 specifically. Locally, I can only get 91 octane ethanol gas, which is not what the manual calls for. It calls for 93 or higher......I have two other options each about 20 miles away....one is 93 octane ethanol gas from the pump, or go to sunoco and get 110 octane ethanol free......Any thoughts? Keep in mind, my engine is stock, and I don't plan to mod it out a whole lot in the near future. Any harm to running the 110 gas?
  19. Hey guys I could use some help here. Long story short I have a bad motor, breaks in the case by the water pump (looks like the last owner jb welded a a piece back together and it failed) anyway, the year is a 2001 yz 125. I’ve had the bike a year and a half and never got to it. The crank bearing spun and the crank is stuck. I’m sure I could split it with enough effort but for now I want to just buy a new bottom end with a good crank and bolt my 2001 head on. Im aware of different shaft lengths and pistons on closer years but I can’t come to a conclusion on which years would be good to match up. If I could just find a 2001 bottom end I’d go for it no questions asked, but of course it’s hard to find an exact year. I see a couple 98s and 2002 bottom ends for sale. The real question is what years are compatible where I could just bolt my top end to another year with little to no modifications? At this point I want this bike gone for the space. I have 4 other bikes so some shelf space would be nice! I would really appreciate some feedback. Thanks
  20. When my bike is not running, I noticed if I put my bike in gear and squeeze the clutch all the way in and roll the bike, the clutch is not fully disengaging and it is turning the engine over. Last week I took it out for a ride and noticed I also cannot start it in gear without giving it a good amount of throttle and if I stop in gear with the clutch squeezed all the way in, the bike will stall. I have no clutch slippage issues or any other problems I can recognize other than the clutch not fully disengaging. I figured it was likely a stretched cable and they're cheap so I put a new motion pro cable in this morning and adjusted it properly and I'm still having the same issue, I have not rode the bike with the new cable but I put it in 1st gear and tried to roll it with the clutch squeezed all the way and it was still turning the engine. What else could be my problem???
  21. Hello, My name is Dan. I recently bought a 2001 yz125. I have been having jetting issues that i cant seem to fix. I have rebuilt the carb, tried a JD Jetting kit, and new reeds and nothing is working. I am looking for someone in the Central Jersey area who is willing to help me work on my bike and get it running strong. I have all tools necessary. I would pay $25 dollars per hour. This is completely legitimate. Feel free to text me at 908-448-9639. Located in Central New Jersey
  22. I have a 2000 yz 125 with all stock plastics and im looking to get a restyle kit to make it look a bit newer, any ideas what kind of kits there are to get closer to the newer models?
  23. Well guys, I officially pulled the trigger!!!! I have been looking for a bike non stop on craigslist for about a year now....I just CANT justify spending 7k on a brand new machine. About 3 months ago I bought a project bike for 500 bucks and realized it was gonna cost way more to fix it than the bake was worth...it was a 2001 Yz125.....so I resold it, didn't lose any money on it, and kept looking....Well last week, I FOUND A GEM THAT I JUST COULDN'T PASS UP!!!!Went and picked this puppy up today for 3,500.00 bucks. 2015 Yz125. Dad bought it for his kid 2 years ago, who rode it for 6 months around his neighborhood, broke his wrist, and then never touched it again. Has about 40-50 hours on it I was told. What do you guys think??????
  24. Ok guys, new to the forum and wondering if anyone has some tips for my bike. 02 yz 125 stock bore . bike used to foul plugs all the time no matter in trails or riding hard on the track. fixed that with a friend we took the carb apart and re jetted cleaned etc. bike started bogging and cutting out a lot but plugs were always great color. he suggested float height was off so he fixed that and the bike was running great . about 10 rides since the fix with it running good , but went ou today and 2 seconds into riding bike stalled . wouldn't start checked plug it was perfect color put a new one in and stared right up but kept bogging and stalling all the time . checked plug multiple times and it was good. always riding hard even in trails or would be in 4th on the track and would just bog out. breaks up sometimes in high RPM too. Anyone have any ideas just sick of it at this point . all help is very appreciated thanks.
  25. Hey, I have a question. But first let me tell you that I am new to dirt biking, so I don't know anything. I purchased a 2001 YZ 125 in October and the seller said that he just changed the Piston and Clutch. I took it out in Gorman (OHV Riding Area) and like I said I am new, so I kept stalling the bike because I was learning and just let go of the clutch. But then when my dad got on, he said it is my fault for just letting go of the clutch lever, but also the clutch plates are a little bad. I can start the bike, let the clutch out 90%, and ride. Like shouldn't it start to move when I am half way of letting go of the clutch lever? I've seen videos of people holding their clutch lever half way and are moving 10-15mph. I can ride it perfectly fine now... But just wondering, what's wrong with it?
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