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Found 216 results

  1. So for my 16th birthday instead of getting me a car for my birthday because of how long it takes to get a full license, I was told that instead I could get a rather new dirt bike. I have been riding since I was 9 years old and started off in the back of my yard. I now own a 125cc two stroke that I am fairly in love with.. However I really really need a bigger bike, I am a very big kid standing at 6'3'' and 270 pounds (No i'm not fat i'm a football player when i'm not riding so i'm just big. Also I feel very bad for the bike) Anyway, I can't decide whether I should get a 250 4 stroke or a 450. I am told that the 250 is a very large increase in power and i don't doubt it is, but I feel that I may be too big for one and the 450 would have that extra bit of power a big guy like me would need. During the summer I am either playing football or at the track and riding. I've been going to the track now for 3 maybe 4 years and would say I have a decent amount of experience. Please tell me what you think... Also I'm personally a fan of honda... But who has the best variants of those bikes?
  2. I have a 2007 xcf 250 that I recently took apart, I went as far a splitting the cases because my gearbox was locking up (no damage to the gears but turns out there were pieces of metal caught in the gears). I put the whole thing back together and now I have a huge problem, when shifting, it wont stop at 1st gear, it will continue to shift down to sixth gear, restarting the shift sequence from the top. No idea what it is, I really need help.
  3. I will post all of my vids from enduro riding on my Gasgas EC 250 2008 racing... today first vid of crashing, because of veeeery slippery conditions... https://www.youtube.com/watch?v=dYDDqT7zuS4
  4. Almightyvicegrips

    Having some problems

    Hi every body I have a Gio X31 250 4 Stroke, it is been so difficult for me lately. I have been working on this bike for a while and have replaced the piston in it. Right now the bike will not start and its boggling me. A few noteable things are that I have checked that there is spark but when I turn the engine over it does not combust and I see thickly misted gas come out the tail pipe. Also, I have checked the timing and all the marking are correct and valve opening times (checked tapits and TDC through spark plug hole). On the compression stroke there was noticeable air coming out the intake which was blowing gas out the carb, so I took it apart and the valve looked like it was sealing completely fine. I don' get it, the carb float level was also adjusted to stop gas coming out the overflow but, I'm not aware that that would affect anything. Any suggestions or comments are appreciated.
  5. Hello All This is my first post. I am very much into my bikes but not on a racing level or anything. Lots of practice days... random outings in the woods... Weekend warrior type stuff . feel free to skip to the very last sentance for my actual question as to some of you guys the in between bits might just be waffle. Also, i have searched for an answer to this with some limited result. So... the big end bearing went while i was doing a poxy rolling burnout, or it was already well gone but this is what finished it off. I have already replaced the crank with one that has a new Conrod and all the trimmings (big end bearing). Going back in time now, when i was stripping the engine i did the clutch side first including the primary gear and whatnot, then when going around to the flyweel side i pulled on the flywheel and was stunned when the entire crank shifted. There is no up or down / wobble movement in the crank but it very easily shifts side to side by about half an inch, now i dont know if this was the case BEFORE removing the primary gear and all that stuff but i am baffled. As it stands, i have the new crank in and the crankcases closed back up and bolted shut with nothing else installed, just crank and crankcases... it still shifts side to side, another note is that it literally just falls into the bearing, as in there was no need to pull it into the bearing, heat up the case, freeze the bearing.. nothing... new crank came, i pretty much chucked it at the right case and it slid rite in to its seat. nice and snug... but slips in easy. To me this is very unusual, cranks normally need to be set into the bearing in one way or another so my question is: Is it normal for the crank in these bikes to have sideways play WHEN the primary gear is off of the motor? Thanks guys.
  6. Hi all, Im a little bit smaller of a rider about 5`2 or 5`3 110 pounds. I feel ive outgrown my crf150rb and am looking to go to a a 250 next spring. Whats the slimmest/smallest 250f out there. Ive almost entirely ruled out a Yamaha because i went to a dealer to look at them and they feel and look so much bigger than all the other 250s. Kawasaki seems like its a smaller slimmer skinnier bike but the Suzuki doesn't look bad either. Ktms seem huge to me and really haven't looked at hondas yet. Any help would be greatly appreciated. Thanks
  7. Hi people, My bike (2009 Husqvarna wr250) has been running like a dog lately. It won't hit band when its cold and it's just generally not running like it should. I took my reeds out and there is a slight light gap between some of them, roughly .07mm gap. It's not a huge gap but I'm not sure if there's meant to be a tolerance of some sort as it does not state such a thing in the workshop manual. From what I know reeds should be dead flat with no light gap at all. However, I will be replacing them just in case. Some people who I have spoken to have advised making sure thet the carburettor jetting is set to standard. I have the Husqvarna workshop manual and have found the "standard jetting". Problem is it's just a whole heap of numbers and codes so I have literally no idea what it means. The only thing I understand on it is that the pilot jet should be set on the second slot which it already is. I was hoping someone on here could make sense of it. I have attached images of the husqvarna manual jetting information. Thanks for the help in advance -Ryan
  8. I have a 2005 Honda Crf250R and I’m trying to black it out but the website I’m using doesn’t have full blackouts for the 2005 but it does have full blackouts for the 2007. Would the 2007 plastics fit the 2005?
  9. throttle127

    Kx250f vs yz250f?!

    I was wondering which bike is better. I have heard many things about both bikes, good and bad. I will be using it for track and trails.
  10. NickSixxUK

    2007 KXF250 Won't Start After Shimming

    Hi There! If you're viewing this then you're either stuck in the same position as me, or you're handing down your well appreciated knowledge! First of all, I'm new to ThumperTalk, what a cool forum this is! But let's get to it; Kawasaki KXF250 2007... History: I bought this bike in January, it was a bit tatty, but I saw it as a brilliant bike to finally get into Motocross full time, rather than just messing around on friends bikes. So my Suzuki Intruder was sold & I went off to purchase it. Whilst out of action with a dislocating shoulder operation, I decided to pull the bike to bits and fix all the issues it's had. Now I'm a Maintenance Engineer, so as you can guess lack of maintenance can really bug me. So the whole bike has had a full strip down. I came to check the valve clearances & they were all out of tolerance, which explained why you'd struggle to start it & it wouldn't idle brilliantly. So the engine came out, I adjusted the valves via shims, which brought them all back into tolerance; along with an oil leak I cured. I was feeling pretty stoked by this point! So the engine went back in, the carb had a full strip down & clean, which was filthy, but now it looks like the inside of a watch. Diaphragm checked for any rips & tears, or pin pricks. All got loaded back into the bike for the first start. I turned the engine over by hand first to make sure I wasn't about to smash the valves into the piston. All good. Primed with fresh fuel, I tried to kick it over. Nothing. Second kick it backfired. From that point onwards it's not tried to even start. Ive checked all the usual suspects, good spark no leakage, it has fuel, carb seems all okay & doing its job. Timing is dead on, confirmed TDC by sticking screwdriver down cylinder & rocking the crank. All earths are spot on too. Now im seriously puzzled, it has everything it needs to fire, but it's not even trying. Any advice, help & ideas would be brilliant so don't hesitate to fire anything across! Cheers guys, Nick.
  11. Lachie Porter

    What year is my rmx 250

    Gday wondering if anyone could tell me what year my bike is its an Suzuki RMX 250 Australian model the vin is PJ11A103435 That’s all the numbers the bike has on the frame it’s not a 17 digit vin so it is hard to tell what year
  12. Steve Leddington

    1991Rmx stator

    Hi I am restoring a 1991 Rmx 250 and am looking for information regarding the stator I have the original stator but it looks like the pickup coil is not sitting in side the the crankcase,I need to order a replacement so would like to make sure it's the correct one before spending lots of money,Suzuki list just one stator for years through to 1998,but I am struggling to see how the mag cover will fit (I don't have a cover at the moment) thanks in advance for any help
  13. 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
  14. Hey there, I recently bought a 1979 Suzuki PE250 in pretty good condition for its age I'd say.However the fork seals are leaking and after struggling for a few days to get the fork caps open(they were seized) I have now come to a new problem. The Dust seal Holder seems to be stuck, in the shop manual it mentions some sort of special tool for removing the fork seal but I'm not sure what exactly it would do.The thing seems like it should just unscrew. I've tried whacking it with a screw driver and a hammer and I had some minor progress but its painfully slow so I was wondering if any of you vintage motorcycle wizards would be able to enlighten me. Any help would be greatly appreciated.
  15. Hi! I just sold a ktm 125 sx and am ready to get another bike and am wanting to get something that suits where I ride and my hieght and weight better. I am a girl I way 130 and am 5'1" I would say I'm intermediate rider and have mostly ridden on bikes that I can't really touch the ground on so I usually use trees or little hills to start and stop, before the 125 sx I was on a 250sxf. I mostly ride on trails in the woods but I do also enjoy going to the track occasionally to play around, the next bike I get I am also wanting to make it street legal just run small errands around town. There are a few bikes I am considering. The main bike I am considering is the ktm 150xc. I was also thinking about the Honda crf150r but I feel that might be a bit small to ride out on a street anywhere. And I also like the husquarvana te250. If you have any knowledge about these bikes or have any suggestions for a bike that would fit what I want to do with it that would be awesome. All that being said I do understand with turning any dirtbike street legal can be a challenge and I am also willing to work on lowering a bigger bike to fit my hieght better through a low seat and suspension adjustments but I'm not really wanting anything much bigger than a 250. Thanks for reading!!!! And any help is very appreciated!!!
  16. couple months back on my way home from a 2 hour ride my bike lost compression and quit. lucky I was just by my driveway. pushed it back and immediately checked the spark plug and cylinder temps with a temp gun. all seamed fine. pulled reads and pipe. everything looked fine but no compression. pulled the head and found the top of the piston trashed from metal flying around. chunk went down beside the piston and scored the cylinder. bike had 59 hours and 2048km on it. pulled the motor and took it to the dealer for them to decide what happened. chunks of metal looks like bearing cage material but no play or evidence of anything wrong. the ktm tech found a bunch more chunks of metal in the bottom end but could not find out where It came from. ktm ended up paying for a new head, cylinder, piston, crankshaft and power valve along with all the associated gaskets, bearings and oil seals. total for parts was around 2900$ Cdn. I had to pay Labour as they couldn't find the source. Labour ended up being 730$ Cdn. motor is back and running great. I was happy with the result as it was 7 months out of warranty having never been back to the dealer with over 2000 km on it. here are pictures of the top end damage
  17. hey guys ive got an 1993-95 rmx 250 and i was wondering if anyone could help on locating an air leak my bike had previously running rich fouling a lot of plugs. during one ride it started to not return to normal idle speed and had a high rpms would this be the crank seals on both sides if anyone could tell me some symptoms or ways of finding a leak that be great cheers
  18. I'm working on a friends 2007 ktm sxf250 and the bike runs like crap, I completely disassemble the carb and set it in a cleaner over night. I took it out the next morning and cleaned all the jets and passages with pressurized air. I put everything back together and it still won't start. The only way to get the bike to start is by turning the idle all the way up and turning it back down, now that the bike is started and the idle stew is turned down, you got to constantly give gas to keep the think going. I took it out on a ride and the bike ran fine until you pull the clutch in, at this point the bike stalls without any hesitation. To start the bike I need to repeat the whole prosedure to get it started. I have another buddy with an 08' and his bike is extremely cold blooded and takes forever to warm up. I'm not sure if there's an issue with the carb or the bike just needs its sweat time to warm up. PLEASE HELP!
  19. Hello guys,so i have Suzuki RMZ 250 2008 year,the problem start 2 weeks ago,when i start the its getting hot fast,can't idle,and backfires,so i clean the carb,adjust few air jet,and problem was gone,i went to ride and the bike suddenly stop running,nothing works,kicking,pulling,nothing cant start this bike,so i found the problem was that it can't make spark on spark plug,and the problem its in electrical system,so my question is: can i get another electrical system from bike that is same year and to put it on mine?
  20. MotoXRacer_19

    AMA Numbers

    Does anyone know how to, or if you can, change your AMA number? The race number, not the full thing.
  21. kawasakikyle

    KLX 351 Problems

    Hey all, In need of help ASAP I recently purchased a 351 big bore kit from Bill Blue. Have heard so many great reviews from others who have done the same to their bikes. Watched all the videos from Adventures in Real Life and MrDuhFactor (popular Youtubers who did the 351 bb kit to their bikes). Decided that I wanted to upgrade the bike since I am doing the Trans-American Trail in 5 weeks. did the whole nine yards of mods, pumper carb, dg exhaust, rebuilt head, stiffer clutch, and a few other little trinkets. finished putting it together and it fired right up and ran beautifully. Nearing the end of my break in miles I noticed it was having really hard starts and would cut out at high rpms once warm. Discovered that this was due to a blown head gasket. I assumed I got the wrong torque specs from the internet because when I pulled the head the gasket looked fine, so I called Bill and had him overnight me two new gaskets along with a list of torque specs. Well I just got it all back together and tried to run it. Barely ran at first, so I pulled the valve cover back off and discovered I was a tooth off on the chain. Fixed that and it sounded a lot better. But it won't stay at idle and and when I try to ride it, it cuts out hard past 4000 rpms. If I try and let it idle, it just dies. I feel like I've tried everything but nothing seems to work. I'm at a serious loss here. This is my only bike and I need it to run good for the TAT in 5 weeks. I am an auto mechanic so I'd like to think I'm not mechanically dumb :/ Getting pretty desperate though.

    Rmz 250 break in oil change

    Got my bike back from the shop a few months ago. I have ridden 3 seperate times for a few hours at a time. I have maybe 6 hours on it sense the new motor complete rebuild. Should I go ahead and change the oil and filter and screens? And how much noise should these motors make? I ride trails and if I'm at a certain rpm I feel like I can hear valve rattle or piston slap. I know I have some chain slap I just put a new chain on before it went in the shop and havent adjusted after the first 2 rides. It sounds completely different from the noise in hearing. Thanks guys.
  23. ben streener

    cr250r fowling problems

    hi I have a 2001 cr250r I am currently running it at 40:1 and it is fowling plugs any suggestions?
  24. 83 yz250

    PLEASE HELP 1983 YZ250

    hey there I've got a 1983 yamaha yz250. this is my first bike and I'm the third owner. the second owner i bought it off off believes the engine was rebuit because the motor pulls stong he says. by the time i pulled up to his house the bike wouldnt start and he said the carb is really clogged up and its been sitting for 8 months. i managed to get him down pretty low so i bought it. $460 CAD so this is the problem. i got my friend to clean the carb since he knows how and it took him about an hour. we then put it back together. we completely drained the fule and went and got premium fuel and i think we used a 40:1 mix ratio. we also flushed the coolant and replaced that with new coolant. we then tried starting thr bike and it didnt start. we thought maybe the engine was flooded so we took out the spark plug and it was wet. sl we dried out the engine and then tried starting it again. it started after about 30 or 40 kicks while holding full throttle. at this point it was about 9pm and we were tired. we drove it around in first gear killed the bike and gave it two kicks and it started up. we then shut off the fuel while and let the bike shut off so we dont flood the engine again. a week later we go to work on it again cause the idle wasn't the best so we cleaned the carb completely, put it back on and it took about 30 mins of me and my friend taking turns kicking the bike to start it up. once it started up we let it warm up gave it a few revs amd then went onto drive it. im new at dirtbiking so i stalled it. gave it two kicks right away and it started we drove it on my street in first gear only and brought the bike back. i stalled it coming to a stop but then gave it 1 kick right away and it started up right away. i then let it idle for a few mins then i stalled trying to move the bike. i was talking to my friend for about 1 minute and kicked it again and it didnt start. we had to spend another 30 minutes kicking it to start it again. and once we started it we did the same thing. drove it then killed the engine and gave it two kicks right away and it started. after that we killed it waited 1 minute and it wont start again. so basically once the bike is started after an exhausting amount of kicks. u cant shut it off for more than one minute or it won't start again... yes the bike has compression. brand new fuel. brand new spark plug i got it the same day it took alot of kicks to start it. also we tried starting it with the air filter off incase it was dirty but its pretty clean. any help at all will be appreciated and i hope u guys can help me fix this! thanks for your time
  25. My 07 crf250 recently was rebuilt to and bottom end. Valves were checked for wear and clearance and there fine. The bike has only ran once, it will backfire and acts like it wants to run. I put a new plug in and no luck. I took the plug out connected it to the boot and kicked it over to check if it's getting spark. It's getting spark but the boot is arcing at the base where it seals to the bike. I plan on getting a new boot, I'm just wondering if there is anything I should be focusing on as well.