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  1. 2013 YFZ 450R Engine Knock?

    YFZ450 & YFZ450R General talk
    I took my 2013 YFZ 450r to my hunting land this week where my buddies and I did some work and some riding. As we finished our ride, I noticed that my chain was sagging considerably. As we got back to camp I announced that no one would be riding my quad because the chain needed to be replaced...
  2. Stroker vs. big bore, cams, valves, crank, rod etc.

    New Member Intros
    Hello everyone, I'm new to the blog. My name is Austin. I just bought a 2006 YFZ, guess that explains why I'm here lol. I know this post is long, so there's a TL,DR down at the bottom for those that don't want to read all of this. I've got some big plans for the quad. I want to up the cc's...
  3. 04 YFZ 450 starting problem

    Quad of the Month
    I have a stock 2004 YFZ450 with a HMF pipe. Bike runs great but there’s been several times where the bike will shutoff when popping a wheelie. In order for it to turn back on I have to wait like 20 min before it turns on again. You can hear the bike trying to turning like it’s about to turn on...
  4. Top and bottom end rebuild

    YFZ450 & YFZ450R General talk
    So, I just bought a 2005 yfz450 for Christmas (2 weeks ago) The seller told me it was never rebuilt and that it was always riding on trails. Unfortunately for me, I was just putting around my yard and it blew my piston. When I had taken my top end off I found that my piston was in 5 pieces and...