1989 YZ250

LCH
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Chardon , OH US
LCH

Need to do a complete rebuild on my engine. Does anyone know where I can get a "garage buddy kit" and the crank rebuild kit for this old of a bike? Wiseco and ProX doesn't have on their website. Also need clutch basket, hub and plates. 

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450exc115
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450exc115 2/24/2025 11:58am
2/24/2025 11:58am

On the older bikes you have to be a little more creative to find all the parts.  That motor is a mix of parts from the 80s into the 90s.  ProX, Woosner, Vintco make rods and main bearings.  Pistons you can find ProX, Wiseco, some OEM on ebay.  89 is still an iron bore.   Transmission bearings you'd have to go OEM but Yamaha is well known for just reusing parts from other bikes so they should be available  Mitaka makes an outer clutch basket but for inner your going to have to find an OEM.  Couple companies make clutch plates still for it.  

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BoxcarWilly
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BoxcarWilly 2/24/2025 12:03pm
2/24/2025 12:03pm

Yes, bikes of this vintage are no longer plug and play when it comes to parts. You'll have to do some research and piece it together. Part of the fun if you ask me. 

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ayiri
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ayiri 2/24/2025 3:28pm
2/24/2025 3:28pm

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SkiBum420
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SkiBum420 2/25/2025 7:36pm
2/25/2025 7:36pm Edited Date/Time 2/26/2025 11:09pm

Boyko Racing If you need to rebuild your crank. Depending on what you have that is still good, send him your head too and he'll fit the right piston. very fair pricing. Teddy is the best. go to their website and call their company number, Teddy himself picks up!

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SkiBum420
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SkiBum420 2/25/2025 7:44pm
2/25/2025 7:44pm Edited Date/Time 2/25/2025 7:46pm

I also have a 89 yz250, it is so close to being Fully-Rebuilt but im missing a Rear Brake Lever......... Please help!

 

DSC 0209

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Last2Stroke 2/25/2025 7:53pm
2/25/2025 7:53pm
SkiBum420 wrote:
I also have a 89 yz250, it is so close to being Fully-Rebuilt but im missing a Rear Brake Lever......... Please help! 

I also have a 89 yz250, it is so close to being Fully-Rebuilt but im missing a Rear Brake Lever......... Please help!

 

DSC 0209

https://factory-72.com/products/copy-of-front-hub-yz125-1990-1991

 

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Jabe
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Ulm DE
Jabe 2/27/2025 2:10am
2/27/2025 2:10am
LCH wrote:
Need to do a complete rebuild on my engine. Does anyone know where I can get a "garage buddy kit" and the crank rebuild kit for...

Need to do a complete rebuild on my engine. Does anyone know where I can get a "garage buddy kit" and the crank rebuild kit for this old of a bike? Wiseco and ProX doesn't have on their website. Also need clutch basket, hub and plates. 

If you look at the bearing codes you might find cheaper bearings but with the same quality from the bearing manufacturer directly. For my Honda is got some of the transmission and main bearings directly from a TOYO/NTN etc. dealer. I am located in switzerland so giving you links is not helping but i have found this to be a good alternative to some of the "OEM" bearings (they also use TOYO/NTN etc), which have the added in my case honda tax on it.

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