YZ Restore

Okay, so can’t ride for a couple of moths due to knee surgery (Not Bike Related), then I have vertigo issues (again Not Bike Related). So I have been living in the garage. Over the Christmas break I restored an 86 YZ125 that I got off of Craig’s list for $125. I don’t try to restore a bike to a new status, but to one that is very mechanically sound and that no one would embarrassed to throw a leg over.


It was actually one of the better bikes that I have restored. Most of the parts that are usually neglected (linkages, bearings) were well maintained. It did have some of the usual problems like broken exhaust hangers, destroyed chain guide and worn out chain rollers. However, I was able to modify parts from other bikes or make others. One thing I learned is that the Clymer’s was wrong on repacking the silencer. After some modifications it is now easy to repack. One trick I learned is that Mop N Glow is a great plastic restorer. Give the offending plastic a light sand with 600 grit or higher sand paper or even 0000 steel wool to get off the top oxidation, then apply multiple coats of the Mop and Glo and the plastic will look great. It was a fun little project, but I’m not sure what I will do with it (main bikes are a 06 KX250f and a 90 RM250). I thought that I might try to lower it for my wife, she rides a TTR125, but at 5’ nothing it probably wouldn’t work well. I may just hang on to it because I really like the old 2 smokers.

So do I!!!

Bikes like that were not that old when I was a kid, and anything MX at that time (1995) was the coolest thing ever to me.

I love looking at the old bikes, reminds me of how much I loved them when I was a kid. My family could never afford an MX bike at that time, but I always loved checking them out in the mags. I remember thinking that anything water cooled with a monocross suspension was awesome in my book, regardless of age.

Still holds true!!!

Very cool bike, and nice work!

Mop & Glo works well for a shine, a little trick to restore it is to use a spray bottle with ammonia to remove the wax and then re-wax after washing.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Similar Content

    • By Mikeybabbel
      Hey guys, I just picked up a running 03 yz125 a few weeks ago and upon tearing down the top end, I noticed the cylinder head looks a little beat up. Is it possible to just clean it up or am I better off just buying a new one? Thanks guys. 

    • By faizakhtar125
      Hey guys I just bought a bike last night. So the seller said the bike will turn on but then die. We didn't try it because it was really late at night and it was raining (seat was wet). But he said if you bump start it, it will turn on and ride. So what do you think the problem is? I just want to make sure it runs... I probably won't be able to bump start it till Saturday (rain)... It's a four stroke, and I know absolutely nothing about them. Thanks.
    • By neonmarine
      Hey guys, 
      I've used this forum as a "guest" for awhile now and I thought I'd share my build now that it's all coming together.  The primary purpose of this project is to help me train for roadracing my 2009 R1 at lower speeds as well as giving me a cheap alternative to racing the big bike. 
      Here's what she looked like when I picked it up from a local shop.  Paid $800 cash for the bike as you see it with 17' rims, FMF pipe, EBC 250mm front rotor and clip on handle bars.

      Fits PERFECT!

      Shake down run at the Herrin Compound last summer:

      As she sits today:

    • By 125 yamaha guy
      i bought my yz125 from a dealer and they said that the clutch was broken so i bought it and it worked fine it would run move and everything and then it started to act up and now only first gear works barely though. when you put it in first it acts like its bogging down but its not and when you go into gears 2-5 it wont move i dont know whats wrong with it im assuming the clutch is slipping or something if you know please leave me a comment