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1983 kx125

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I've been working on this 83 KX125 for a while now. The project started with plans of getting a set of tires and a top end.

A whole bunch of money and time later I'm at this point of the build.

Once I got it down to the frame I was shocked how fragile it looked so i made gussets And had them welded on around the swingarm pivot . Also a glide plate

The frame is powder coated satin black. The hubs and triples were powder coated in a dark bronze that was supposed to replicate the Pro Circuit /Works Kawi dark bronze. It didn't come out as I hoped. Wanting to move forward I stayed with the color . Part of me wished I made the effort to get it right. I still had a bunch of parts and bolts plated. Many bolts were replaced with Ti.

I tried Plastic Renue and absolutely hated the final product. I buffed and polished out the tank and was impressed that I could get the result I did. .

I laced up a 19" rim and a gold 21 to a Yamaha hub. I choose a Yamaha hub because it because the big round spool looked works to me. Can't believe everyone didn't freak out in 82/83 and buy a KX just to have a front disc.

I bought a totally whooped out 84 kx250 shock just for the spring on eBay.

I'm leaving holes in my story. Its late for me but I wanted to get some pics up . I'll fill in gaps in a later post.. I'm looking forward to riding again. Been off a bike for 6 years. At that time I wadded pretty bad and was never riding again. So this is really my last last one more time chance.

I need to say I had the help of a lot of generous people. Many I had not met before. KawieKid is one of them.

And thanks for looking at what I've done so far

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This is the starting point. It's was low hour and not beat on

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My build has been going slow with work. Not complaint here. I'm working .

When I had stripped everything from the KX the frame looked fragile. I swear a xr100 frame looked stronger. So I made some custom gussets . I could have kept going but I had to stop somewhere.

These are pics of the frame before I had it powder coated obviously

 

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The swing arm area of the frame was fragile looking. I took some time making custom gussets and had them welded

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This was under the tank

 

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The bottom of the frame started out as small corner bracing and it turned into a glide plate

I
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I just finished making a vented numberplate. I took more time with this stupid plate than any other part of the bike. 

I would get nearly finished and take it apart and start over again. I don't know what my problem was. It's not like it was something difficult. 

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Nice work, it is turning out great.  This brings back great memories.  I think my first dirt bike magazine had a test of the '80 or '81 KX420, from the same era.  I don't remember exactly.

 

Good luck with the rest of the build.

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Hi, could you tell me how thick and the part number of the head gasket you used?

There are several different part numbers; thinking they may be different thickness.

Thanks

BTW ..... great work. Looks awesome!!

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Hi, could you tell me how thick and the part number of the head gasket you used?

There are several different part numbers; thinking they may be different thickness.

Thanks BTW ..... great work. Looks awesome!!

Sorry I missed this. I had not realized there were different part numbers. I'm thinking they are all the same and part numbers were updated by Kawi. I would like a thinner head gasket if I could get one. I'm going to get a head cut for race fuel and have a stocker too.

I'll look at the package and get it to you if you still need it. I am responding 5 months late

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Here are a couple pics of it finished. It most likely won't look this fresh again until the next owner restores it. I'm going to ride the wheels off this bike after all the time and work I've invested

I'm very much looking forward to this upcoming season. I have other plans like having Tom Morgan Racing port a cylinder or even running a 85 power valve engine if they won't let me race against the other 83 bikes because of the disc. But first I want to wear some parts out

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Thanks for the response; if you could give me the specs on the head gasket I would appreciate it.

Also, where did you get the tank sticker?

Btw, I rode the wheels off my 82 ..... love it!!

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Excellent job. Too nice to ride though!

Thank you William. Of course I like a fresh bike, I can't think that way . If I owned a 55 Chevy it would be my daily driver. If I owned a early 80s works bike, I'd be at every vintage race entered in 3 classes. One day we are going to be dead and none of this will matter. If I save this bike fresh and I die. Now what? My kids don't want it. They put it on eBay and hopefully get 1500 at best. Probably less. All that and I never got to feel my bike holeshot a pack. And I had to roll it around the garage for 20-30 years. No, I'm going to use it. The next guy that buys it for 500 can restore the bike and he can choose to watch it collect dust.

Im half joking But i thank you for the compliment.

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Thank you William. Of course I like a fresh bike, I can't think that way . If I owned a 55 Chevy it would be my daily driver. If I owned a early 80s works bike, I'd be at every vintage race entered in 3 classes. One day we are going to be dead and none of this will matter. If I save this bike fresh and I die. Now what? My kids don't want it. They put it on eBay and hopefully get 1500 at best. Probably less. All that and I never got to feel my bike holeshot a pack. And I had to roll it around the garage for 20-30 years. No, I'm going to use it. The next guy that buys it for 500 can restore the bike and he can choose to watch it collect dust.

Im half joking But i thank you for the compliment.

I so agree with you.

 

although I am hoping to get my grandsons into it when they are old enough.

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Very nice KX, I love my 83 125. I run the same Suzuki forks as you on my 81 Maico 490, with a 465 Yamaha drum brake for vintage, and the RM Disk racing against modern bikes. Nice work on your KX, glad to see your gonna ride it like it was meant to be!post-26488-0-05228400-1420318962.jpg

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Edited by motosquid
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Very nice KX, I love my 83 125. I run the same Suzuki forks as you on my 81 Maico 490, with a 465 Yamaha drum brake for vintage, and the RM Disk racing against modern bikes. Nice work on your KX, glad to see your gonna ride it like it was meant to be!post-26488-0-05228400-1420318962.jpg

Have you gotten grief at any VMX events using the Showa forks on your 81? That with the YZ wheel seems like a great set up. Your Maico is the only one with brakes

I have a set of 87 CR forks that I want to slip in the triples for the events that will not allow them. I want to have the proper sized sleeves made to fit them in the clamps on my bike now. I like the clamps because the bars mount right over the top of the forks not mounted back near the gas cap .

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