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1-14 of 20 Results
  1. Maintenance
    My Yamaha won’t start. Check engine light is flashing, some sort of code. I need help to find out what it means. It is also pouring gas out of the air intake boot don’t know what to do. Please help. It’s a 2015
  2. YFZR-X Powertrain
    2017 450r HMF performance slip on exhaust HMF fuel optimizer Pro design - Pro Flow K&N intake w/o a top cover I'm noticing slight hesitation at lower rpms when rolling into throttle/light acceleration. As well as an excessive amount of backfire around those same rpms or with light blips. Mid/top...
  3. YFZ450 & YFZ450R General Talk
    Hello y’all. First post here. Have a 2016 yfz450r. Have a spark issue. New stator and new coil that are both oem parts. Have power to coil but no spark. Anyone else have a similar issue? Any help is appreciated thanks y’all.
  4. Tips N Tricks
    so the throttle is ridiculously uncomfortable, any suggestions on a different throttle to use? Also does the new throttles have electrical sensors in them?
  5. Maintenance
    I have an 2004 Yfz and it backfires, won’t idle for more than 10 sec and is hard to start. I am looking for answers
  6. Maintenance
    Hey there, So i just bought a 2004 yfz 450. When i bought it itook it for a test drive and it ran great. So the next day i go out to ride it and it starts right up. So i try to ride i rode for 1 min and the i stalled it out. It was cold (-20) and i think the engine cooled down and i couldent...
  7. YFZR-X Powertrain
    I have just done some mods to the bike, a vision air intake to the stock air box, AIS delete and a vortex. I need some help/ recommendations picking a map. P.S. it's a 2017 with a full Yoshi system Any help appreciated! :)
  8. Maintenance
    Hey everyone! I have a 2018 YFZ450R SE that I bought brand new in 2018. It has a full FMF with Power Bomb head pipe, FCI Intake, and a Power Commander V. It has been giving me some serious issues the last few times at the track. Basically at Mid to higher RPMs the Engine breaks up and cuts...
  9. YFZ450 & YFZ450R General Talk
    hey all, i recently bought a YFZ468 thats running terrible, valves are in spec. Im at sea level and around 50°F. just wondering what you guys are running for jetting.. no airbox lid, k&n filter, hmf slipon
  10. Maintenance
    I have a race bike that has a yoshi tri oval exhaust and a 4.5 inch intake with no lid for some reason it has been breaking up whenever you hold the throttle at a constant rpm, I have a video that I can text to someone if anyone is willing to help, thank you! 740-319-6280
  11. New Member Intros
    Hey, guys I just bought a 2008 yfz450se and I'm mainly doing trail riding with buddies. I have a couple of mods that are simple I just have to rebuild the carb, change oil and buy an air filter. I saved up over the years so any mods or ideas budget-friendly would be greatly appreciated!
  12. Maintenance
    Hello yfz community! I'm brand spankin new to the awesomeness of the yfz. I bought a 2006 yrs 450 1 week ago and fell in love. On about my 3rd ride out she lost compression. I wont give up on this beautiful beast I normally ride 2 smoker dirt bikes but I love this yfz. I dont want to pay a...
  13. Maintenance
    My 2016 YFZ died while riding, I had been riding it all day and sometimes when I’m the throttle it would sputter a little bit but wasn’t bad enough that I thought anything of it. I was heading home on the thing and it just died on me and now won’t turn over?
  14. YFZ Powertrain
    I was planning on doing the zip tie mod, rather with a wire though. I wasn’t sure the benefits of this mod, only that it prevents a little bog. My yfz has little to no issues with bog. Is there any other benefits to this mod and should I even do it? Thank you !
1-14 of 20 Results