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Found 91 results

  1. Hello all, WOW, I have missed the community during the upgrade, but I am glad we are back up and running. I am in the process of replacing the top end on a YZ125 and going over my CRF250r and replacing all the items that need to be replaced. Let's get back to the CRF. The right muffler had a big dent in the cone tip, enough that it was driving me crazy, so I bought a used one off Ebay to replace it. When I installed it, I noticed that the diameter of the hole was much smaller than the left muffler. The guy who sold it to me said it was pulled off an 07 CRF250r, just like my bike. So, is the right muffler hole (at the end of the muffler) smaller than the left one? I just want to make sure I was sent the right one. Here are some pics of the new one installed.
  2. I have a 2007 CRF250R, and when the bike first starts up it runs perfectly. Absolutely zero issues, but around 15 minutes into riding, the bike stutters a bit and stalls when given a small amount of throttle. It still runs well in the high end, its just the low end that is giving me trouble. Any help is greatly appreciated. Thank you
  3. Okay so the title is a little vague. So it was having trouble idling and even starting when I first bought it about a month ago for $2k. So I did a rough clean of carb, looked up on YouTube, Forums, Etc on how to do it. I only cleaned jets with carb cleaner and sprayed around the float bowl area and such, so not too extensive. Did that and I took it out to a park, It would start up right away mostly, few kicks sometimes, but when I got it started, I had to keep the choke on. Right when I was ready to go fast and go up to 3rd and 4th gear I'd switch it off and it would work fine and sound fine and everything, but when I slowed back down and coasted around 1st gear i'd pop it back out again because it sounded like it was going to do. I have some videos if people would like me to link to them. So after that I decided to take it apart and replace spark plug with OEM NGK R0409B-8, replace main jet from a old 170 to a new 170, replaced pilot jet from a old 40 to a new 42, and kept starter jet the same just made sure that wasn't clogged, ordered a new adjustable fuel screw and used that. and it was still having a little bit of problems! I just started up today and the day before today. It would run only with choke on, if i twisted throttle in neutral it sounded pretty good, no gun shot noises or anything, pretty smooth. If I tried to take choke off it would die immediately. So I started it back up again, took around 6 kicks.. So again with choke on it sounded like it was starting to lose power and RPM's would drop so I'd twist throttle a few times and it would stay idling.. then after a small amount of time, start to sound like its about to die again... so I would rev it up again, and repeat.. Fuel line isn't clogged, flows fine. I tried fuel screw everywhere between 1 and 2 turns out.. I checked valve clearances, and I'm no expert but from the videos I watched the slipped underneath intake and exhaust with only minor force. So I'm lost.. Maybe float bowl is messed up? Should I just do a COMPLETE carb rebuild from videos I've seen on youtube, like this one -> https://www.youtube.com/watch?v=3AXb9UprT30? Or what? It's getting annoying taking it apart all the time, I jsut want it to start up quickly and run well!! Thank you! Austin, TX, Elevation 600ft, where I ride its around 900ft
  4. jay373

    2016 CRF450R First Ride

    I decided to post to the web my thoughts of my new 2016 CRF450R, mainly to give a basic review for comparing different bikes from a basic weekend warriors (me) perspective. Because most people I know aren't buying a brand new 450 every year. Background- before this bike I was on a 2008 CRF250R mostly on moto tracks and occasionally I'll rip on a 1994 CR125R. Some basic points I want the internet to know are all of the above bikes are great weapons for training for a entry or even intermediate level local MX rider. The CR125R is still a very powerful bike when ridden properly, which is all top, make that thing SING and it will GO. You work a little harder, but it's really not slow. My only other major point here is that the CR125R is 'softer' than new bikes. So it's not very forgiving if you come up short etc, but for the woods, trails what have you it feels like a Cadillac. The 2008 CRF250R was a good moto bike. That bike too liked the top a lot, although it had some mid. Suspension was revalved by Factory Connection for moto and felt good. The 2016 CRF450R has a great suspension for moto, feels better than the 08 250R that was revalved. This is important, something to remember is that all the bikes have improved a lot in the past ten years, and the STOCK SUSPENSION, feels awesome to me. So just because the suspension gets shot down in reviews, doesn't mean its worse than 2001 CR. Also this bike feels just as light as the 08 CRF250R. The ENGINE has the best power delivery of any performance machine I have ever owned, or ridden. Hands. Down. I bought the CRF450R because my 250 was wore it, and actually on a dollar per hour of ride time basis, the NEW 450R made a lot of financial sense, being I'll get a lot of 'pain free' hours out of it, and I was able to pick it up for 6900 hundred - 'year old model'. Whereas I'de have about 3-4k into rebuilding an older bike into tip top shape. Details, 33 psi in the forks couple clicks harder on all rebound and compression. I'm 175# with gear. Aggressive setting on engine mode, mild had what I felt like was a long delay on throttle response. Good bike. End Review.
  5. TPA-MX

    Back to a CRF250r

    Hi Guys, Well, I am back to a CRF250r (2014). After owning an 07, then going to a 2013 RMZ350, then to a CR125, my son wanted to get back on the 4-stroke. The first thing I am doing is to check the valves. I noticed on the unicam setup, the rocker arm that controls the exhaust valves has little "feet" the extend down to hit the shims. I noticed when trying to measure the clearance with feelers, due to the feet on the rocker, it seems to make it hard to get a good measurement. Any tips here? Thanks!
  6. Bruce Martens

    2008 crf250r head on a 2006

    I have a brand new 2008 crf250r head and I want to put it on my 2006 engine, from what ive researched it should fit fine right? what gasket set will I need to use? I shouldn't have to use a 2008 cylinder right? 08 piston? The engine is fine as it is but I just want to avoid further valve/valve seat/hard starting issues in the future
  7. Zac.W

    oil in the wrong side oops

    hi quick question I accidentally put the transmission oil in the motor oil side and the motor oil in the transmission side after that I ran it for about one and a half hours over the span of two days will anything bad happen or are they close enough that I wont have to worry if I just change the oil properly? BTW i am using Honda 10-40w and Honda 80-85w
  8. Alright so i recently had my bike apart for changing shims for about a month due to lack of time but after I put everything back together correctly(I'm fairly certain I did) it would not start so I checked timing etc and it's all correct so I started bumping it and whenever it did finally start if it was below 4000-5000 rpms it would just die any advice on what to check or try would be greatly appreciated!! (always maintained very well with oil, filters, air filters, cleaning after every ride, etc not just a pos I throw around)
  9. Rhino USA

    Old to New Front End Conversion

    Just got done converting my 2007 CRF250r front end to a 2014-15 front end.. Just a different fender and number plate but what a difference IMO!! Super simple to do took maybe half an hour, definitely recommend to everyone if you wanna make your old bike look new!! Let me know what you guys think and if you're thinking of doing it I'll answer any questions you may have!! -C
  10. BRAAAP_Man555

    Worn Valve springs = less power?

    So i have this 06" crf250r new high compression piston in a new cylinder and i recently changed all of my valves. I did not change the springs. I found a small piece of valve spring in my flywheel. Could this make my bike have less power? How do you test valve springs to see if they are still good? Is it safe to ride as is? Feels like carb is a little off but thats a different topic.
  11. Hey TT, I have a 2009 CRF250R. She's a pain in the ass to start and keep running, won't idle with the choke off. Carb is stock (Main Jet #185, Slow Jet #42, Clip is on 3rd groove down from the top). No airbox mods, bike is stock. I've dismantled and thoroughly cleaned the carb, ensuring everything is correctly reassembled. Tried the fuel screw at 1 1/4 turns (stock). She'll run a smooth high-idle with the choke on. Dies immediately when choke is turned off. I'm positive the pilot jet isn't clogged or damaged. It looks perfect. I'm also positive I have no air leaks around the card. What else should I be looking at? It ran okay a couple days ago (just okay, not great). I have to use the 'pump twice then kick' trick to get it turned over. Usually 2-3 kicks. - Matt
  12. Hi, I have an 04 CRF250R that's puking coolant only when it's not running. This only started happening after I had gotten back from a week long vacation I noticed a sizable puddle of antifreeze on the floor, the bike had be sitting for about 2 months prior to the vacation only being started up every other week. I'm super confused since it was super sudden, before I tear it apart I wanted to know if someone else might know what might be going on, it has to be either the water pump seals or radiator cap.
  13. UwotM8

    Swingarm compatibility

    Hello fellow thumpers, I got a question for y'all. So basically I am not very smart and forgot to tighten my sprocket on my 2010 crf250r. This ended terribly as my back hub is now mangled, and my swingarm is ripped apart. Also, since I didn't have my riding boots or pants on, my chain whip lashed into my leg and created a 4 inch deep gash in my Achilles. So while waiting for my leg to get sewn back together, I need to prep my bike for some ass-whooping again. What I needed to know from you guys is what year swingarms are compatible with my bike; I don't feel like buying a new swing arm because they are expensive.
  14. So i was about to get a crf250r until i went to the ktm dealership and checked out a 2017 ktm 250sxf. i just wanted to know what thoughts people had on these bikes. I have always ridden honda but would like to know more about the ktm. reliability, handling, resale, and any known problems .
  15. So I picked up a project bike recently (another 2007 CRF250R) an the screws on top of each fork which allow you to go "softer" or "harder" are just not there. I have never removed any of those screws and wouldn't know why the previous owner did. The forks are working but I want to replace these screws and I am having no luck at all finding just the screws. Any help would be appreciated. Thanks, Skin
  16. I hope someone can help me correctly jet(or at least get to a good starting point) my son's 04 CRF250R. It has a Hot Cams Stage 1 cam, stainless valves, FMF PowerBomb header pipe with a FMF Powercore 4 S/A Silencer muffler, Stealthy 31 ounce flywheel and a 53 tooth rear sprocket(stock 13 tooth front sprocket). The FMF PowerBomb header pipe and FMF Powercore 4 S/A Silencer muffler are new this year. We do mostly trail and fire road riding, no track racing, which is the reason for the heavy flywheel and +2 on the rear sprocket. FMF recommended: 50/50 mix of race fuel and super unleaded, main-170, pilot-42, needle- NHGT in 3rd position and 1 1/2 turns on fuel screw. They couldn't give me any specs for just pump gas and race fuel is hard to find near me(not to mention pretty expensive for trail riding) so I'm hesitant to use this as a starting point. I also read on TT to use a NCYQ needle-3rd position, 48 pilot, 50 leak and 2 turns out on the fuel screw. These are only 2 examples of approximately 6 different jetting specs I've received and they are all different from each other. The current specs are: Current Jetting- Main 160 Pilot 45 Leak 70 Needle NCYR #4 2 1/4 turns on fuel screw I'm hoping to tap into the years of knowledge possessed by TT members to come up with a good recommendation to get this bike running correctly. It has always run OK but I know it has a lot more in it. Please help me get it right and get my 15 year old off my a**. P.S.- If anyone knows any NEW ways for me to get my 02 XR250R started easier feel free to let me know. I've already tried all that I've read on TT and it's still a bitch to get running most of the time.
  17. Hi, I have a 06 crf250r and it will not kick start for the life of me, but it will bump start. So I checked the valves intake seemed fine but exhaust valves were way wacky they are supposto be .011mm but my left was .016mm and my right was .014mm what size shims do I buy thank so much! Will new shims fix my problem?
  18. Ok so i was out riding today noticed no issues , shut my bike off and went to go start it and everytime it's in neutral and you kick it. It goes into first gear and the kickstart is then almost impossible to move but it does , pulled the clutch cover everything down to the basket looked decent. What could the kickstart be catching , the shift paw or is this transmission related , where should I start looking.
  19. I would like to turn my 2004 crf250r into a duel sport. It is stock. I would like to put a light bar on the bars, brake light, and blinkers on front and back. I'm not familiar with electrical work or the stator, flywheel, etc. I was thinking about getting a small motorcycle/atv/lawnmower battery and finding somewhere to stick it on the bike and wire all my lights directly to that but that sounds sketchy. I also thought about finding a battery pack (probably lithium) powerful enough to push the lights. But idk where to start. I know I can run it to the stator but idk anything about that. Any information and tips will help me a whole lot. Please and thank you. I just really don't know where to start.
  20. 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?
  21. Hello all, The clutch lifter in my bike is rusted and I have a new one to install. Is there a guide/steps/diy I can follow? Thanks!
  22. motorlife

    '09 CRF 250R starting issues

    Hello everyone, I recently purchased an '09 250R. The previous owner did tell me it was previously rebuilt. The bike has great compression the timing and valves are all up to spec but it doesn't start when hot and VERY difficult when cold. It seems to idle high and after I get it running (20-30 kicks cold) if not more, it heats up and is seemingly impossible to start again. The overflow does leave a puddle of gas about 20 kicks in (may be usual, still learning this bike). When running it rips and seems to idle fine for awhile then it comes back up again. I'm not sure if this could be contributing to something but it does seem to heat up a lot over a short period of time. Again the timing and shim sizes are all up to spec and I'm running out of options at this point I'm trying to avoid sending it to a mechanic (very expensive) but I will if necessary. Any advice would be greatly appreciated. Thanks!
  23. MotoXRacer_19

    2 Stroke Top End Problem

    Hey guys I was wondering if any of you could help me out. I’ve got a 2010 KTM 250 XC that just doesn’t rip like a normal two stroke should. When I get up to the top end power it just signs off really early, causing me to shift really early. I can’t figure out why it’s doing that for the life of me. My jetting is spot on for th altitude I ride, the spark plug is a perfect brown coffee color, (170 main, 40 pilot, Suzuki NECJ Needle on 3rd clip) so it can’t be that. (I went with the Suzuki needle because I read on here that it could give it more top end, it did but not the amount it should have) and it I just put on new reed petals for the V-Force 4 reed system, new FMF Fatty and FMF Turbinecore 2 pipes, stock gearing (13:50), yellow power valve spring (red spring doesn’t help either) aggressive engine map, and it still signs off early on top. I bought the bike used, and the previous owner had it choked up so it acted more like a four stroke. The only thing I haven’t looked at is if it has a fly wheel weight, but that wouldn’t necessarily make it act less wild like a two-stroke, would it? I need some suggestions and I would greatly appreciate the help!