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Found 395 results

  1. Okay so to start off i know for a fact that it is a carby issue. Basically i have a 1995 Kawasaki Kx100 2 stroke, and its never ever had a single issue for the time that i've owned it which is over a year. Recently with the weather becoming colder approaching winter in Australia, the bikes been really really un-happy. First i noticed that is wouldnt start like it used to so i was like no issues, probably just the colder weather, then while riding it i realized it would bog out at full throttle, like a blubwubwubwub kinda bog. After a bit of tinkering i cleaned out the carb and stuff and tried to tune it, i came accross a different issue, now basically when im riding and i get to like 4th gear, all the sudden the bike will rev out really high and ill loose all power. Then i upshift into 5th and it will be good for a second then rev out and i loose power again. Ive checked everywhere for air leaks and all that and i cant find any. is my air adjustment screw letting in too much air? and in the case of the bog at full throttle should i maybe go down a size on the main jet. Lastly theres another issue lol. when i start it it will idle for a second and then rev its guts out. Please help me, next step is to get a brand new carb i think.
  2. Jesse T. Groth-kennard

    2stroke kx250 brakes

    so im rebuilding my bike again as you can see in the before and now pics, im a creature of habit and when i ride i mostly use the front brake because of years on a street bike, im thinking i want to tie the front and rear brake both to the front brake handle and still have the separate rear pedal just like on my 2014 artic cat 4x4 atv, and if it is possible to do by stacking the banjo fittings or would i need a brake bias to make it work rite, if so any ideas on this ridiculous idea?
  3. Duncan Suttil

    2stroke yz250x noise at 5,000 rpm

    Hello all I've been trying to find this out for a while but i haven't been able. im trying to make a 2 stroke road legal but i can't find any easy way to see how much noise the yz250x puts out at 5,000 rpm the road rules say that it has to be below 95dba to be road legal in that aspect so just seeing if anyone knows.
  4. Omer Aviani

    2stroke KTM sx150 or sx125 ???

    Hey so I’ve decided I want to move up from my crf150rb to a new 2 stroke and one problem I’ve had is deciding whether if I should get the ktm 150 or 125 and which is better for me I’ve listed my size and experience below and I’d love if you’d help me with my decision I’m 15 yrs old weight around 140 and 5’8 not much 2 stroke experience it will take time to get used to I’ve been riding for around 2.5 years now and I want a bike that’ll have good low end top end so I can learn and get used to the bike and I want to pick the best one for me either then sx125 or sx150 leave your opinions below thanks!
  5. I recently bought a yz85 in great condition it just needed some carburetor work (the float needle did not seat properly). Now that that's fixed, I have a question. The bike is an '06 and the owner said "yeah it's still on the stock piston probably only has about a hundred hours on it" I cringed when he said this. But, nevertheless, I took a test ride and decided to buy the bike. When I kick it over, the compression is average for an 85 and it starts 2nd or 3rd kick cold and first kick warm. When riding it, there are no strange noises and I can hear no piston slap or anything out of the ordinary (listen to it in this video: https://www.youtube.com/watch?v=nx0VislGsg4&t=4s). I know a top end rebuild is a must on these 2 strokes so how has this bike lasted 12 years and still sounds like it's new? It doesn't bog, the only thing I have noticed is that it will hesitate while taking off sometimes when it's hot. I know I'm going to get the average "PUT A NEW TOP END IN IT NOW" 2 stroke guru, but is it really necessary? I have not taken the cylinder off yet but I put my finger over the spark plug hole and kicked it over and it has enough pressure to lift my finger but it's also really oily in there (oil ring left on my finger). So, what do you guys think? Does she got a few more hours or does it need a new piston ASAP?
  6. XRFeller

    YAY more peewee Probs.

    Hello guys. I recently picked up a 2000 something PW80. I put on a new top end(jug,rings,piston,plug, etc.) and a new carb as the old one was thrashed and had stripped bolts galore. My problem is i get a gnarly bog at about half throttle in all gears except first (mostly because first winds out before i reach half throttle) and it smokes like a mother ***. Also lots of oil build up in exhaust, nearly dripping. a few things about the bike. holes in airbox, exhaust washer and silencer removed, new top end, carb, removed the autolube system. i have to admit the carb was 12$ haha but it was nearly an exact replica of the stock one as i could see from the pics. im guessing its running hella rich from the plugs and piston already having black build up. my friend has an 1985 pw 80 and i used his carb on mine and it did nearly perfect except for the top end bog a little so i knw its carb related but im not sure what steps i should take from here. Thanks in advance for taking the time folks.
  7. Thtyzguy

    Getting rid of spray paint

    When I bought my bike from my previous owner he had to horrible spray paint job on it, i'm just starting to get around to it and i really dont wanna take the engine out to repaint it (there is also remains of paint the the engine cover that I want to get off). Its a steel frame yz125 and i was wondering if anyone can help me get rid of the because if I take the engine out it will never go back in. Thanks
  8. Okay i have a 1994 KTM 250 EXC my clutch works perfect when shifting but if the bike is stationary and off when I am in gear and pull the clutch the bike won't move it works fine when it is running but if I went to bump start it or even just push it around without having to be in nuteral it won't work any suggestions?
  9. Lachie Porter

    Rmx 250 speedo 1992

    Gday was Wondering if anyone knew what speedo goes on that mount and if they knew where I could buy it. I bought the bike with it missing. It would Be a digital speedo. cheers for help
  10. Jezamire

    2002 rm125

    Hey guys. My yz 99 deal turned out to be a 96 deal. So decided to look elsewhere and came across a very neat rm125 2002 model. Has fresh top and bottom rebuild. New clutch cable and throttle cable. I love the look of it minus the pipe whats your thoughts? And any ideas on updating the look?
  11. Found this good looking 2008 YZ250 on craigslist in my area for $2500. Guy says it runs good, very powerful. Has full FMF exhaust, suspension done by factory connection, protaper bars, cycra probend guards, restyle plastics kit, and oversized gas tank. Theres a photo. (only one he posted) Is there anything bad about the 2008 yz's? 2006 and up has the SSS forks? I have been scouring for a 2stroke forever.
  12. I am looking for a carb for my 1990 RMX250. Found a couple on EBAY a bit ago, but none there now. Any other resources that ya'll know of other than a new OEM? It's the last piece I need to finish my 2nd RMX250 project and get it sold. Appreciate it. -John
  13. I’m in the middle of putting the crankcase together on my yz, and i found that the crank isn’t centered between the two case halves... I only managed to find one mention of this issue on google and they just said hit the crank end with a mallet which won’t move it even a bit for me. Wondering if anyone has had this issue and if someone could explain how to fix It. I also found that when I put the piston and cylinder back on it doesn’t seem to be effected. Am I imagining this problem?? I just want to ride
  14. In advance of getting my first 2-stroke , a 2000 YZ125 off the bench I'm watching a lot of videos of two-strokes trying to get a sense of how they are ridden. One thing I've noticed is that riders blip the throttles is a way that seems to be unique to 2-strokes; they rotate the throttle then open their hands letting it snap back by itself. I've never seen this done on 4-strokes. Why is it done on 2-strokes?
  15. So the other day i bought a brand new 2017 ktm 250sx I took it for a ride on the mx track and it was great, heaps of power and good suspension. I took it home, cleaned it and did a little bit of maintenance. the next day I tried turning on the bike and it just didn't want to start. I thought it might of been a spark plug so I took it out and it was flooded with black stuff. It was a failed plug obviously. I did my research and it said if it's black, it's rich. so I changed the plug and it started right up with no problems. I checked the owners manual and it said main jet (440), idiling jet(42,5), needle(43-73), clip position(3), idle air screw(2 turns out) and my gas mixture is 50:1. it was all perfect for the temp and height I was riding at so i really dont know what's wrong. there is black oil coming from the exhaust aswell. Could anyone please help me and sort this out. cheers
  16. Hi guys, i have recently just bought a 2004 yamaha yz125, it has an athena 144cc big bore kit. The bike runs great! It has a loud knocking sound coming from top end but vibrates the clutch plate too. It speeds up when revved but goes quieter, also the sound dampens when the clutch is pulled in. The sound wasn't there when i bought the bike, then the knocking came after the second time of taking the bike out just up a lane. I have taken it out once to a proper track with this knocking sound and no problems or changes occured. By reading up it could be piston slap, but also many other problems. I don't know how long for sure the kit has been on the bike but the fella who i bought it from said "i think a year", but don't know of any care to the bike within that year because he was selling it for a friend. If any of you could help that would be great! And do i need to be majorly worried about this? Thanks
  17. Hey all, let me get right to the point, basically for the past couple years I've had this bike, it hasn't been running right. It tends to start well, and has a decent amount of power for a 200+ lb kid on it, but once I attempt to hit the top of the power band, it tends to cough and sputter like it's choking. When I recently checked to carb to jet it, I realized ALL but one of the Jets are missing. I've checked the reed valves, they seem to be in great shape... However, today (it is a warm day) it ran great for a while, after topping off the oil and running with the choke half on, this bike also leaks oil, but I'm almost convinced that this is a jetting issue (being that they're missing) at this point, but I've also never put a top end in this bike. Thanks for any help, I'd just like to get an opinion on what you guys think. I know I'm all over the place btw, sorry for that
  18. wachterxc

    Rim width of a 2015 KTM 300?

    At school and shopping for nitromousses. Bike´s at home and dont know what is my rim width is (mum doesnt even know what is a rim so I cant get her to take a picture). anybody know what rim width comes stock on a 2015 KTM 300 XCw THANKS
  19. Gday was Wondering if anyone knew what speedo goes on that mount and if they knew where I could buy it. The bike is a rmx 250 I bought the bike with it missing. It would Be a digital speedo. cheers for help
  20. Whether you're a seasoned wrench who justs wants to compare notes or a top-end rebuild No0b, here's a great article on the subject, including pics. Give it a read, share any comments in the comment section, and share with an any 2 stroke ridin' buds that might benefit from it. https://thumpertalk.com/articles/how-to-rebuild-the-top-end-in-your-two-stroke-r878/
  21. KTM_rider_EK_17

    Restyled KX125

    Hey guys! I am planning an upcoming project bike. I am planning on buying a 2000-2005 KX125 and restyling it with the 2017-2018 plastics. I've seen it be done but I need to know what I am in for. What do i need to know and how do I do it? My main concern is plastics. So far, I know that I need a 2017 seat, tank, and subframe and a 2007 KXF airbox then custom fit everything. HELP!
  22. So picked up an 81 cr450R replaced clutch among other things, went thru and cleaned and jetted the carb but for some reason once I drop the choke the idle wants to climb almost immediately, have tried adjusting idle screw to no avail. Not really sure what else to check any and all ideas would be greatly appreciated
  23. Tnewsome525

    YZ125 cdi problems?

    I have a 2006 YZ125 that I bought new back in 06, I have went through the whole bike recently and everything is in good shape. Checked all the electrical system and it is up to spec. cleaned the carb spotless inside and out. Stock jetting always worked fine where I live. So for about 4 years now I haven’t ridden the bike but a few times and now I noticed that the bike isn’t running right when you snap the throttle it hesitates too long and just doesn’t have the throttle response it had before. Also when I looked at the head it was pitted some from detonation. I have read in here that a few people have had cdi trouble on the YZ125 and 250, if you have can you share your expirence of a bad cdi with me? I’m hesitant about buying one cause you can’t return electronics even if they are faulty also if anybody has a cdi box 2005-18 they would sell let me know, thanks
  24. My battery is dead and I can't seam to charge it up. I've got this awesome 300 XC 2015 2 Stroke which has a two Kawell LED lights ( I think they are the 18 Watt version that pull 32 volts). It has the stock stator and voltage regulator. It has a Tusk TLP7ZS Lithium Ion battery which is dead and won't charge. It died out in Green River, UT area last weekend and I kick started the bike for a few days which was no big deal, but I'd like to get a functioning light and have the E start work if I'm going to haul all that E start stuff around. I recently installed a Trailtech computer on the bike and hooked it up to the battery so I could monitor the voltage. At one point while I was riding I watched the voltage drop but I can't say for sure what this looked like because we were riding great trails and that's what I was paying attention to. I unhooked the computer for the last two days of the trip to see if there was a short and the battery might charge off the stator. The first thing I checked was the main fuse near the battery and it was in good shape. It got pretty cold on this trip, under 30 degrees at night and at one point I left the light turned on and likely drained the battery. The battery had not been maintained over the winter but the bike had been ridden a few times so in theory the Lithium Ion battery should have been charged up before the Green River trip. It's likely the battery got really run down during this process due to my own negligence. I'm thinking of cleaning the ground connection and replacing the battery with the stock KTM lithium Ion and seeing what happens. I can look for other obvious shorts around the heat sensor and the rest of the electrical during this process. Based off what I've shared here 1. Are there other issues I should be looking for 2. Is the stock stator even powerful enough to handle 2 18Watt LED's? 3. What's the best way to charge and maintain a Lithium Ion battery if I do buy a new one, do I need a special charger, I looked at the Shorai ones but don't want to drop coin if I don't have to. Thanks for the help, I want to avoid wasting money on batteries if possible and would like to learn how to solve this problem myself.
  25. I’ll be moving to Oceanside, CA area fairly soon. I’m looking for trail riding spots that have awesome views along with some gnarly terrain. Willing to travel 3-4 hours if the spot is worth it.
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