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Found 366 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. 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?
  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. meter86

    Lack of Power

    Hey everyone, I am new to the world of 2 strokes and I am having an issue with a 1996 CR250r that I recently acquired. To begin with the bike will bog down when I first hit the throttle and will do so again if I let it sit for a bit. However the problem goes away if I am constantly on and off the throttle. The larger issue however is that the bike seems like it is hitting a rev limiter at 3/4 throttle and the power is lacking for a bike this size. Id appreciate any help in trying to figure this out.
  6. QuinnEXC

    Running rich?

    Hello, I ride a 2002 ktm200exc and am having a couple of specific tuning problems. Before I get into that, I run 40:1 in the gas, my elevation is 5800', my main jet is a 170 and I believe my pilot is a 45. I'm running the blue needle from a JD Jetting kit, and I believe the clip is in the highest position but i'm not sure. My float is to spec. The first problem iv'e encountered is that the bike will not reach peak rpms until 4th gear. The second is that the spark plug is too dark and too much oil comes out of the exhaust. I'm not sure what to adjust since I already dropped the main from a 180 to a 170. Thanks, Quinn.
  7. My Old/New 2008 KTM XCW 250. I knew I wanted a KTM.Knew one day I would have one,just didnt know which one.So I decided to let fate decide.So I placed a KTM sticker on the window of my truck and just knew one day I would come across what I was suppose to have,no matter the condition.I have my own A.C. business, and had a call to a Memphis radio personalities home one day.She sees the KTM sticker,says hey,my brother rides that kind and is selling one,my spidey sense kicks in,I say oh yeah?She says yepp,Ill call him to see if he has it,I know its on craigslist.I went to craigslist and there she was,in all her beaten down glory,good god all mighty,she was whooped on.I get it for $1200,knowing the suspension is shot,the E start,will not start,but she fires every time from the hip.I knew nothing about these xcw bikes,so I took her on home. I rode it for a few hours to feel her character then knew exactly what I would do.See,she was down on power and didnt like to get up and go,me weighing 220 didnt help out im sure.I had a challenge ahead of me.Here is what I did......I took it down to a pile of nothing and restored it Powdered the frame PPG white,The swing arm black,sub frame black.All parts are new,Factory KTM bearing in all areas,KTM wire harness,Rekluse Z Start Pro,Wiseco billet clutch basket,Lectron HV Carb,S3 Slavens High Compression head,SX CDI box,2011 model Translucent tank,Plastics including new airbox and 2017 front fender and plate,Moto Seat,Front Suspension by Zip Ty Racing with Gold anodizing of forks by Ty,Rear Nitro bladder and builld by KTM world,Chain and sprockets,wheels and tires,tubes,rear tail light,FMF fatty,power core,VForce 4 reeds.Lithium 130cca battery,all new updated 2016 xcw E start components,7602 racing clutch cover,ims pegs.All gaskets by Cometic.New starter and kill switch,new speedo lens.All nits and bolts are new factory ktm,even engine mount bolts.I know im leaving something out....I rebuilt this bike to how I envisioned it to perform with all the components combined,working together to enhance one another and it does perform. You can see black and orange,the day I got it home.Then the new,white frame and black powdered coated swing arm and sub frame.Then various money shots,but not all of the parts to the go fast puzzle.Finally the finished product.The condition of the bike is,the only things not being brand new would be the triple clamps,bottom end,rotors and radiators.Everything else is new.KTM world rebuilt the entire engine 75 hours ago per the receipts I have,which total over 2K.The bike runs so perfectly,it is just what I had in mind. Thanks for looking! Nate Davis
  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. kclark22

    2003 cr125 powervalve issues

    I just bought a 2003 cr125 and when i rode it for the first time it wasnt running right at all. It wouldnt hit the powerband in first or 2nd gear at all. The rpms would come up and then it would just sputter and fall flat. It sounded terrible and i didnt have a clue what was wrong with it. I read a little about it and decided to take a look inside. I took the cover off the right side where the powervalve is and it seems as if the arm isnt even connected. Can somebody please help me get this issue fixed. I need step by step instructions on how to remove and fix the powervalve. Ive owned 2 strokes before but ive never rebuilt one. Ive always had my dad there to help me and now that ive grown up, im on my own. Any help would be appreciated. I can also post pics if anyone needs to see what im talking about. Someone Please help me
  10. 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
  11. 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
  12. 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
  13. ThrottleTwistFilms

    Exploring Trails

    Made a little video of me riding some new trails we discovered, I had no clue where I was going. But I found out a way to ride a pretty fun loop to practice for woods races on. Check the video out, feedback is appreciated
  14. Jack wagon

    Bike bogging??????

    Hello fello riders, I'm fairly new to dirt bikes and I just put a new top end in for the first time, anyways I've been ripping around a little bit and I noticed when I try to pin it, it bogs down and dies unless I pull in the clutch and rev it a few times. Is this a sign of running a little rich or is it something else??? It really isn't a big deal but its pretty annoying. Thanks for any input!! Also my bike is a 2001 Kawasaki kx 125 2 stroke!
  15. Just wanted to share a video I saw recently of some guys riding their two strokes. Videos like this help me get through the winter haha!
  16. 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/
  17. 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
  18. My rm125 leaks gas when sitting there on the stand with gas off. I've tried cleaning carb to make sure no dirt or anything! Please help! Also my kickstarter is tight when pulling out?
  19. I have an 2002 cr250 and the bottom end crank bearing seized. While taking the motor apart the top end looks to be in excellent shape and I just replaced it two rides before the bottom end locked up. Do I need to replace the top end as well? I already ordered all oem parts for the bottom end but am not sure if I need to replace the top end. I can post pics of the top end later today. Thanks ya'll
  20. Kacer

    KTM 250XCW tail light

    Last weekend when I was riding through some trails, my bike decided to “take a walk” without me. I ended up breaking my rear brake light on my 2016 XCW and can’t seem to find a replacement for the light alone. My local dealer quoted me $125 to replace it but that’s a little insane for a simple light. Does anybody know where I can buy a replacement or one that would work with the existing wiring harness connector?
  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. Yamaha_all_day

    Yz250 Build , need help on wheels

    CANT FIND A STRAIGHT ANSWER ON FORUMS , NEED HELP NOT SMART ASS COMMENTS Background - cool weather has me motivated on doing a ground up restoration on my 97 yz250 , last year I fully restored my first bike that got me into the sport a "1993 yz125 " . Just like my my build last year It seams Im stuck with the bastard children of Yamaha , parts are hard to find and seems to be little or no aftermarket parts. I have already spent well over $1,000 on this yz250 in plastics , custom graphics , asv levers , custom gas tank , exhaust and other crap so the most cost effective way would be best lol. I'm wanting to change the look of the bike with black wheels , rims are 160-220 each depending on brand . spokes are 60+ each set and labor is about $200 locally to lace and true . I have searched high and low on forums and google haven't found a single aftermarket set that fits a 1997 everything is 99+ Question - I have found a newer set of wheels https://www.rockymountainatvmc.com/p/1071/42645/Tusk-Impact-Complete-Front-Rear-Wheel-Kit what do I need to make these work on a 1997 ? I know my hubs are 20mm and 99+ have 22mm. if you could help with part numbers or links on what I need. Here is what I'm going for ( top pic ) the one below are my progress , frame goes to power coating tomorrow
  23. Ghent's05KDX200

    gas tanks

    I ride a 2005 Kawasaki KDX200 and I about ran out of gas on a ride today at a national forest and was wondering if anyone knew if there was a bigger gas tank than the ClarkeMFG 3.6 gallon tank for my bike.
  24. Noahmd_10

    weird studder

    I just bought a 2004 ktm 125sx and it is a very clean bike. I have ridden it only a few times and i noticed a weird studder or kind of bog when in mid to high rpms and the bike cuts out for a second and then cuts back in a split second. I cant figure out what it is doing this. I keep air filter clean, new spark plug, good gas. I use an NGK BR9es, the manual says to use NGk Br9evx. i have read it could be powervalve, jetting, maybe silencer packing, im not sure. please ask any questions, i really want to figure this out. thanks
  25. 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
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