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Found 116 results

  1. Connor200202

    125 Cr 125 2002 won't go in 1st gear

    So I have a cr 125 2002 model. It runs fine in any other gear but when you put it in first gear it wants to go but it doesn't move. Any ideas?
  2. I went to do I top end on my bike because the compression felt low and it is now winter so there is not much riding to do anyway. When I took the piston out I noticed a lip had formed on the exhaust port side of the piston. There was no wear or scoring on the cylinder which I found strange. I put a new piston in warmed up the bike at idle with a few blips on the throttle. During this time when ever I would blip the throttle there would be a low quite sound like sand was in my expansion chamber. I blew out my pipe but the noise was still there. I pull the head of to just make sure everything look right after being ran and the piston had a small lip on it again. I've link a picture of the piston that I replaced with the new one.
  3. Does anybody in a snowballs chance in hell have a needle for a 1998 kx125 carb? I broke mone and guess what... obsolete. The part number is 0XHHK, or 16009-1982. Any help appreciated
  4. Colt Hillis

    Sponsorships in ohio

    I'm looking for a motor builder that could sponsor me, something along those lines thats close to ohio. I currently race a yz 125.
  5. Tarron

    Wiseco Crank

    Hi all, I’m thinking about buying a 02 CR125. It has a full engine rebuild. Crank,rod,piston,rings (wiseco) I’ve heard a lot of bad things about the wiseco cranks. Saying that they break less then 50 hours. If anyone has used wiseco cranks before can you let me know how it went and all? Thanks
  6. joegreen17

    CR125 Knocking sound

    I have a 2000 CR125 with a noticeable knocking sound, i have took of the top end, there was no play at all in the crankshaft, only side play, no play in flywheel either. i will replace top end with a new needle bearing and pin with new piston. Can anyone help me find what the knocking is ?
  7. I want to flip an old bike, what is a good one preferably 2 stroke. I've heard good things about 125?
  8. So my little bro wants to go from four wheelers to bikes, I don't really know how the skills translate, he would prefer 4 stroke but he isn't to opposed to 2 smokers, I was thinking he should be ok on a 250f or 125 smoker, he has a raptor 350 been riding for about a year, I let him ride my old 230 he seemed like he was doing fine, would a 250f or 125 smoker be to much for him he thinks it would i think he will be fine though, what would you guys recommend?
  9. Rmrider144

    Rm125 upgrades

    Hi I was just wondering what upgrades I can do to my 2004 rm 125 (144 bored) that would be cheap but make the bike look amazing
  10. Hello, Well my old 2011 crf250r needs a full engine rebuild and it's going to cost too much to fix, would it be possible to make a 95 cr125 fit the frame, would even a yz engine fit? Cheers
  11. Hey guys, I'm always up for feedback and if you enjoy the video, please subscribe on Youtube + check out our other videos via this link: https://www.youtube.com/channel/UCdmeXD1_Or_fle3VVeM01RQ
  12. My yz is making a sort of thumping noise from the air box. The engine noise is fine when you’re close to the pipe but if you are closer to the air box it sounds really weird. I checked the reeds and they seem pretty good. Help?
  13. MotoXRacer_19

    AMA Numbers

    Does anyone know how to, or if you can, change your AMA number? The race number, not the full thing.
  14. Hello everyone I am 16 years old and I was a quad rider ever since I was young. I had a ltr 450 that I sold recently. I'm about 5'5"-5'6" tall and weigh about 115 lbs. I rode my friends rm 125 just this past weekend and I enjoyed riding the bike! I'm looking into buying a 125 but I still cant decide weather to buy a yz 125 or a ktm 125 sx. Again I'm a newer rider to dirt bikes but I still know how to ride one and I'm also new to 2 strokes but I've been doing a lot of research lately and learned a lot about them and all the maintenance with them. I will be using the bike for pretty much all trail riding. I just want a reliable bike that I can take care of that will give me no problems. Any Opinions/Preferences? Thankyou Everyone!
  15. Hey hows it going everyone, I'm new to the forum so please don't jump on me if I do something wrong but ... I have a 2004 CR125, the exhaust valves were stuck in one position, took it all apart and fixed that problem, but I took my servo unit apart and the gears are stripped from try to move the powervalve when it was stuck, question is can I use a servo unit off of a CR250 on my 125? 04 servo unit is hard to find due to 04 being the only year with an EPV. they look identical, some sites the parts numbers are the same for both and other sites the last number is different. it looks like you would be able to use a few parts for the rc valve setup from the 250 on the 125, I could be completely wrong though. did some research and couldn't find any answers, so here iam! any help would be greatly appreciated, I'm not a master mechanic but I do klnow my way around 2 strokes, been on them for about 14 years now.
  16. Drewboroce

    Ssr 125 oil leak

    I have a new 2018 ssr 125 and I have a small oil leak near my shifter and kick stand I don’t know where it’s coming from the but I just also noticed my crankcase vent hose is split in half all the way down the middle
  17. The start of the budget build on my 2017 SSR 125!
  18. Drewboroce

    Can’t find a gasket for ssr 125

    Can’t find Ignition / sprocket side cover gasket I’ve looked and looked but can’t find one that looks like this I’ll post a pic it’s ripped tho that’s why I need a new one
  19. I just wanted to share with everyone a pit bike that I purchased back in November 2017 called a DB-X-29 X-Pro. It's by X-motos. It's a 17/14 125cc pit bike that has a Zongshen 125cc engine. It has inverted front shocks and a nice looking and working rear shock. The stock suspension is stiff enough to support my weight (195lbs and 5ft10) and it works really well. It's been a super fun, reliable, and solid little play bike that I am planning to use for camping and exploring the area.
  20. i have a very beautiful 2004 kx125, i picked it up a few months ago and when i got to the guys place to check it out, he started it by foot like normal and i rode it around the yard and about 500 feet i went and brrrrrrrr it fouled the plug??? but it was 1800$ so i was like heck with it im still getting it to the looks of the condition and claimed recent rebuild. i took it home and we replaced the spark plug and we had to bumpstart it this time. again 500 feet and brrrr fouled. this bike has a BRAND NEW mikuni carbourator OEM with jetting and airscrew position on point, Timing is perfect, i even tried advancing and retarding the timing, still nothing. i put it back in its normal position though. Reeds are good. no gasket leeks. good compresion. spark plug is BR9EIX NGK. it gets a spark, its getting gas, its getting air. when i try and start it, it back fires sometimes a loud pop. carb should be out of question, timing should be out of question. what else is there to check? i have talked to a few people saying it might be either, crank seals, or the stator. but i have NO IDEA of what to do. please help me i know u guys might know what to do, im 15 and trying to get into mechanics and i try to be the best mechanic i could possibly be with my hard earned tools. 4/1/17 ill be checking on any comments or suggestions every 8 hours or so. and i also dont want to buy new parts for the bike that it doesnt need. Thanks for reading! give me your best shot, I accept any help!
  21. Just as the title says, what's everyone's favorite eBay mods for your bikes. I find my self buying quite a few parts on there for cheap money. Might not be the best stuff but it sure is cheap! 👍🏻
  22. Hey I need some advice I have a Chinese pit bike (please no ball bustin lol) but it stopped working 2 years ago I ceased the engine. I bought it used for 300$ originally price of it is like 1000$. I was thinking should I just drop a new engine in it? The new engine is a 140 a step up from the ceased 125. The engine is only 340. The thing is I haven't touched it in 2 years. So I know i'm going to need to do more work besides the engine such as bearings and new wheels and etc. Do you think it's smarter just to buy a new one like 800 or just take time and rebuild the one I have??
  23. So heres the issue, i have replaced the seals multiple times for the water pump however still get a leak out of the weep hole. Over time it goes into the oil side. I think ive found the issue but dont know how to fix it. There is grooves on the ‘water pump shaft’. To which most would say replace it, its not as easy as that, the shaft is directly connected to the crankshaft so my question is, can i fix these grooves without replacing the crankshaft and thus spliting the case?
  24. So my 125 is bogging so much that is stalls when riding. It can be fine for a small amount of time, maybe half a lap but thats it, its fine when on the stand no bog at all. I took apart the top end today as I've read it could be the power valve, the bike has 4 laps on the new top end. The Z adjustment is out by 4mm, although it was perfect when rebuild was done. But the connecting rod won't move in order to adjust the Z measurement. I undone the screw the red arrow is pointing to and then moved the adjuster the blue arrow is pointing to but the rod does not move. Any advice?