Top End Rebuild

3 replies to this topic
  • RoadRash19

Posted February 05, 2009 - 10:21 PM


My sons 05 crf70 top end went out this last weekend. Still running, just burning a lot of oil. I'm going to keep it stock, OEM top-end kit is $105. But I've never done a 4 str top-end. So, how difficult a job is this? Any how to links out there? I really dont want to pay $50 for the Honda repair manual. This is the last season he'll be on this bike and it'll be sold.

Thanks for any help/suggestions/links in advance...

  • qwoke-q

Posted February 06, 2009 - 04:40 AM


I'll be installing an 88cc top end soon. I'm going to make a video of how. It will hopefully be done and edited in a week. If you don't want to wait, it's very easy.

Keep in mind that a top end shouldn't cost you $100. You only need to get new rings, the piston is rarely damaged. If you have a hone you don't even need a cylinder. If you want, you can pick up a set of rings here and a cylinder if you need it.


Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • BlingBling5O

Posted February 06, 2009 - 08:49 AM


These are Two Bros. website directions I used when I did my sons 88cc kit and helped big time only thing that might not be the same is the alignment of the rings but I had the layout for my rings but this is a good information guide if it helps

  • RoadRash19

Posted February 07, 2009 - 12:23 PM


thanks both of you, good info. I really appreciate it.

Related Content


Honda CRF50F 2009 by ThumperTalk

Honda CRF50F 2009
  • * * * * *
  • 1 review
  • Last review by buddha43
  • On February 03, 2014

crf 50 oversized carburetor by anger806

Dirt Bike   Make / Model Specific   Honda   XR/CRF 50/70/110
  • 5 replies

Honda CRF70F 2007 by ThumperTalk

Honda CRF70F 2007
  • - - - - -
  • 0 reviews

Honda CRF50F 2008 by ThumperTalk

Honda CRF50F 2008
  • * * * * *
  • 1 review
  • Last review by bronc3
  • On January 29, 2014

Honda CRF70F 2006 by ThumperTalk

Honda CRF70F 2006
  • * * * * *
  • 1 review
  • Last review by OES03
  • On April 09, 2014

Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.