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Found 219 results

  1. Pissed93CR

    Need radiator help 93 CR 250

    Hey! New to forum and have quick question. I just started a 93 cr250 project and all the parts are original and some are a bit clapped out. The radiator needs to be replaced and I am wondering If the eBay radiators are worth it. Company names on ebay are, MSR Racing, Worley, GPI, and HR Racing etc. Are these radiators any good or am I stuck buying an expensive OEM unit? Should I buy a used OEM? No one really seems to make or carry them except the eBay stores. I also have a hard time trusting eBay purchases. Any help would be much appreciated! Thanks -Peter
  2. ThumperTalk

    ATK 250 1990

    0 reviews

    MOTORCYCLE TYPE Enduro ENGINE SPECIFICATIONS Displacement (cc): 244 Cylinders: 1 Engine Stroke: 2 Speeds: 6 Speed TRANSMISSION SPECIFICATIONS Number of speeds: 6 Speed Dry Weight (lbs.): 220
  3. Hello all here goes my first post, I have a fully rebuilt rmz 450. The bike runs great, the only problem is every time I try to kick the bike over, about every other kick the bike gets hung up, like some of the teeth on the kick starter gear or the idler gear or clutch basket are messed up. I tap on the kickstarter and have to lean the bike over a bit and keep tapping the kick starter and then it will free up for a few kicks. I took the inner clutch cover off and swapped the kickstarter gear with the one that was in it because I had one laying around. Worked for about two rides, then same thing. I found quite a bit of black suit looking stuff that appeared to be from the clutch plates like it was possibly getting in between gears and causing them to bind. However, I just received a new washer/spring that goes behind the idle gear and wondering if that could be the issue.... Again, I have rebuilt a ton of motorcycle engines and am very knowledgeable, but this just baffles me because I haven't found any damage to the gears from the kickstarter, idle gear, and clutch basket. Any advise would be great. I have attached pictures of the washer and I believe the manual calls for the convex side facing inward.
  4. EnduroBandit

    bushing Gio X31 250cc Linkage Bushings

    Hey ya'll! I've been riding my Gio X31 250cc really hard lately and one of the rear linkage bushings went. Now it makes a horrible squeaking noise lol. Does anyone know were I can get replacement bushings or if there are any compatible bushings from name-brand bikes? Thanks, Jordan
  5. C_juve

    Cylinder head-reusable?

    I have a 2002 cr250 2 stroke that recently blew up. i believe it was due to low octane fuel and extended periods of holding it wide open. Mill tech already replated my cylinder, redid the power valves, and sent me a new piston with gaskets but i was wondering if i can reuse this cylinder head if i really clean it up. Any advice would be appreciated. I can buy a new cylinder head for about $85 if needed. i would like to reuse this one but i already have $600 into the top end by sending it to millennium and the parts alone so i suppose another $80 wouldn't be too bad. pic of cylinder head attached.
  6. 4wheelinbro

    CDI Box Swap

    I have a 2008 ktm 250 xcfw and was wondering what, if any, is the best CDI swap for the most power gain.
  7. I just stumbled across a hell of a deal on a brand new FMF Megabomb for a 2014 KTM 350 SX-F. However, I have a 2014 KTM 350 XC-F, and on the ad it says the pipe fits the SX-F models but says nothing about fitting the XC-F. Does anyone know if the head pipes on the SX-F's and XC-F's are interchangeable? I assume they would be since they are identical motors, but I don't want to order it and be SOL.
  8. shaunarnett

    Will this wheel fit??

    I'm looking into buying some extra wheels to just swap out when I take my DRZ 400 out to the dirt. They have the stock wheels on it now but have 70% street 30% dirt tires on it right now that just won't cut it out in the dirt. I found some 1982 IT 250 DID from Yamaha but I'm not sure if they'll fit right on or what kind of modifications I would have to make to get it on there. Thanks for help guys!
  9. Mikethe80srocker

    1984 YZ 250 VIN Decal Info ??

    I'm restoring my old 84 YZ250L and need some help identifying the correct " Wording " on my VIN decal off my frame's neck area . I want a local graphics shop to remake this Decal / Badge , but mine was half rubbed off ... Does anyone know what the missing words are ??? Thanks for any help , i really appreciate it !!!
  10. There is a problem with my friends 06 crf250. It will start up and idle for a little bit and then stall. Turning on the choke makes it run longer but not by much then it stalls. Also, if you give it throttle to keep it from stalling it sputter and dies. The carb has been rebuilt, also all the Jets have been cleaned along with everything else. The tank had been emptied and filled with fresh gas. What could cause this?
  11. Long story short, my KX has been acting up lately, it seems like the jetting is constantly changing and will run lean even if i have the air screw in tight enough to foul a plug. Sometimes it runs perfectly fine, usually trail riding, but typically when I'm hill climbing or riding very hard i will get the idle surge when i let off the throttle. This makes me want to turn the air screw in to avoid a shattered piston from running lean but its not really solving the issue. Last weekend I raced and it ran great for the first 2 minutes, got the holeshot, then it just kept bogging, putting and popping until it died and did not want to start again. The one cover for the actuator rod for the powervalve was loose which i could not tighten without taking the cylinder off, could air be getting into the ratio from there even though exhaust was coming out? Also, this piston has a ton of hours on it. Someone recommended replacing the rings, as they could be worn and not keeping a great seal on the engine. Should i replace the rings, tighten the cover for the powervalve actuator, clean the carb and put it all back together or throw a new piston on now? I wanted to race this weekend which probably wont happen if I'm doing the top end rebuild. Also, if the top end is recommended, where do i start? the cylinder looks fine, do I have to get a (very slightly) bigger piston to make up for the worn cylinder edges? How do I know what piston to get and how do I know what size base gasket to replace it with? Any tips, thoughts, recommendations would be great thanks!
  12. Brady The Honda Guy

    Cr 250 Conversion

    So I can get a 1986 cr250 motor for a good price and I also know a guy that has a 2005 crf250r that needs work. I have the idea of just swapping motors. Would this motor fit in the newer frame?
  13. Hi all, I have a 2004 Kawasaki kx250 that died suddenly on me the other day. all i can get it to do is backfire every once in awhile. Tested the resistance and everything of the magneto and stator with a multi-meter and all is good. Coil is new oem Kawasaki the reeds are brand new vforce and the top end and carb have been completely rebuilt. key on crank is intact and all the timing marks are lined up. I hooked a timing light to it and spun the motor over really fast and found that it is sparking way to late. The service manual says that it is supposed to fire 14 degrees before TDC but it is sparking way after TDC. Im thinking its a fried CDI box since its the only thing i wasnt able to check. Any help would be appreciated Thanks
  14. Callahan Scholtus

    Need new cylinder for a 1995 cr250

    I have a blown motor a 1995 cr250 and i need a new cylinder but cant find one for that year what year cylinder can i buy to replace that one and what year would be the best fit.
  15. At one time I was a pretty good rider back in highschool but got out of it during college when my KTM got stolen. Im fresh out of college now and am trying to get back into the offroad world. I recently bought an 07 CRF 250X. Im 210 pounds with gear and know im to heavy for my stock suspension but dont have the money to get my suspension re-sprung and revalved at the moment. Does anyone have any tips for getting the most out of stock suspension without heavier springs and revalving for until I can get the suspension worked?
  16. 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! 👍🏻
  17. I have a 2010 ktm 250xc and as I was changing the chain and sprockets today I spun the rear tire and noticed a wobble from side 2 side. It wasn't that bad but it's noticeable. Long story short I cut my chain 2 short and it was very tight on the bike I cranked it and ran it for maybe a min in first gear before realizing. I took the chain off and spun the tire again and it seems like the wobble has gotten worse... it's not the bearings because I just changed them and they only have one ride on em. I didn't change the spacers tho. I'm not super knowledgeable about wrenching on the bike I've just been kinda teaching myself. Idk if I fcked something up or if the rim is bent need some help here. Also we have a ride planned for this weekend would it be safe 2 ride it with the wobble or would I just be damaging it even worse . Thanks In advance for the help
  18. canonball.z

    KX 250 high rpm bog

    This is going to be very long winded, but I know there are people who know a lot more about 2 strokes than I do that I need help from, so I want to provide as much detail as possible. I bought a 2003 KX 250 about six months ago. When I first got it, I replaced the air filter, cleaned the carburetor, and put in a new spark plug. Up until about a month ago, that was all I had done to the bike besides minor stuff that doesn't relate to the actual performance of the bike. It rode hard and fast since I had bought it without a hiccup (besides some fouled plugs), but on a ride about a month ago, I had been riding it decently hard for about an hour and a half when I tried to really open up coming up a slight hill and it sounded like the bike hit a rev limiter. It still had all of its low end power and otherwise ran perfectly fine, but it was like it could not get into the powerband. After keeping off the pipe and letting it coast as much as I could on the way back home, it seemed to get a bit better, where it would just get there, but any farther and it would sputter like crazy and bog. Just two weeks ago, I came to the conclusion (to the best of my knowledge at least) that the power valve was sticking shut, and since I was going to take the cylinder off to clean the power valve anyways, I decided to rebuild the top end. After cleaning the power valve, replacing the piston, and repacking the silencer, I broke it in nice and good and let it rip. It sounded crisp and had all of its power everywhere it was supposed to have it. I felt like I was riding a new bike, so I enjoyed that for about half an hour. Next day, I hop on it and warm it up, take off and it bogs when I get to the powerband. Every time I've gotten on it since, it's a different story. One minute, it's bogging like heck, I sit for a few seconds to calm my frustration, take off and it rips with a sound like that of angels singing. It always runs exactly the same at low rpms, but very different at high rpms. I hate to admit it, but I cleaned the power valve without completely disassembling it, so I think that may be my problem. I'd just hate to tear the bike apart again, thoroughly clean the power valve assembly, put it back together and then my problem still not be fixed. Not sure if it's important, but it does foul plugs quite a bit. It has since I got it though and it ran good before this problem started. Any help is appreciated. Thanks for reading.
  19. considering riding 450s : Is 12t sprocket better for trail/enduro use !? does it help the bike not getting stall in the tide sections !? or 13t is still better and just changing the rear to 52t ? dose it help to have 12t front + 52t on the rear ? any other combination !? suggestion !?
  20. Hello guys im new so bare with me but i just picked up a 1999 yz250 for 550 it had a blown head gasket didn't know till i wanted to change piston and etc but it will not idle whats so ever choke on it will idle for 7 sec then die no blip of the gas or nothing and another thing is im not sure what kind of carb is on there i've been looking for a 1999 yz250 carb rebuilt kit but there is not none noooooo where !!!! i was thinking to just buy a brand new carb from summit or ebay can you guys tell me if this will work perfectly on the yz please im trying to ride with my step pops SAME EXACT ONE THatS ON THE BIKE - http://www.ebay.com/itm/like/192119880998?lpid=82&chn=ps&ul_noapp=true SUMMIT - https://www.summitracing.com/parts/mku-tm36-2/recommendedparts
  21. I have a 2008 WR250F dirtbike. My speedometer is very messed up along with something else electrical. First off, when I turn the key (I wired in a key ignition) the speedometer does not light up, the taillight doesn't work, and the headlight doesn't work. They only turn on when I kick it as my electric start doesn't work either. Then when I start to ride the speedometer reads anywhere from 100-189mph. Even when Im standing still, if I rev it up the speed will go up. Also I have gone through 2 AGM batteries in 4 months because they keep shorting out. Does anyone have any ideas on what is happening and how to fix it??? I need to sell it so I need to get this figured out. ***BTW I know that the problem does not stem from the new ignition I wired in because when those wires touch it blows the right fuse under the seat, happened to me when I was putting it in and that fuse is still good so no problems there.***
  22. Tarron

    2003 YZ250

    NO HATE OR SMARTARSE. Hi all, i have recently bought a 2003 yz250. I have gotten it freighted so i have only looked at photos and a video of a start although, those don't prove much. I have a couple of questions if anyone can help me please do. If you have had the same year or similar and model please tell me what you ran? PLEASE NOTE - I LIVE IN AUSTRALIA. 1. Because i have gotten it freighted, the fuel has been drained. A mate wants to test the gears and some other stuff, so i am going to buy 3l of fuel to test, what ratio should i mix at and what fuel and oil should i use? 2. I'm riding in the bush with a couple of mates on 250 2 strokes, there will be quite alot of dirty,dust,rocks etc, what would be the best air filter and oil? 3. I wouldn't consider myself a pro rider but, I ride fairly hard, I want the bike to be healthy and in good condition. I don't want to replace the top end for at least 40+ hrs. What would be the best fuel to oil ratio, and what would be the best fuel and oil to mix with? 4. I plan on doing a top end, service, power valve and carb clean and maybe add v force reeds (if gears and the other stuff are good) Watched a couple youtube videos of top ends and they look easy, power valve looks a little hard but i think i can do it, have never cleaned a carb on a 250 so not sure what to do. If i added vforce reeds would it need to be jetted? (Don't know how to jet either) Think that is it for now. I LIVE IN AUSTRALIA.. Thank you
  23. ThumperTalk

    Maico 250 1983

    0 reviews

    MOTORCYCLE TYPE Moto Cross ENGINE SPECIFICATIONS Displacement (cc): 248 Cylinders: 1 Engine Stroke: 2 Speeds: 5 Speed TRANSMISSION SPECIFICATIONS Number of speeds: 5 Speed Dry Weight (lbs.): 222