I just baught a 04 YZ250 and was told it has a 450F gearset Problem is that...

I just baught a 04 YZ250, and was told it has a 450F gearset. Problem is that pops in and out of first gear...mostly pops out, especially under load. The rest of the gears are perfect and shifts smoothly. Any ideas?

17 comments
  • Yep. Just what everyone else said. I just had to split the lower case and do it myself. Make sure that they used a whole gear set and not just certain gears from that 450

  • Damn.. all bad. Thanks for your help guys.

  • Anyone know the book time on a job like this so I know what Im getting myself into?

  • This is what I used to do mine.

  • Thanks Jeff. I appreciate your help. Nice Fox btw. I have a 93 CHP w/ a 408 and full Griggs chassis

  • take your time plan a weekend. Lay the tranny parts in a row on a clean table. tag parts if necessary.

  • Your welcome. It sounds like you have a nice Fox yourself!

  • Where did you get your gearset from?

  • Ebay! I paid about $300 for a complete gear set with shift forks. My forks plus 2 gears had problems on them.

  • Any recommendations in upgrades like. 450f or YZ250x

  • I just have a standard set. I think some guys play with different gearing depending on what they are doing on the bike.

  • David James Eugene Bailey

  • I know you can use the wr400/426 gears to make it a wider range box if that's your thing

  • Been watching this for a few days lol doing bearings on my 01 yz250, just waiting on my tusk tools to get here

  • Nice. I used the videos from them to help me along with my bottom end. Everything turned out great! Good luck.