1986-1991 Remote Reservior Shock Rebuild Parts Availability;

[KTM520EXC]

OK, so I am at a stopping point on my project due parts availability which I could use some help with.

The internal shock body looks to be fine, the bladder looks fine, so I don't need a new one of those.

I can get a new seal head from a variety of sources, as well the rubber bumper from Honda, however I can not for the life of me track down the piston ring, nor the o ring that goes behind it. Although the piston ring does not look to bad, seeing as the seal head was hammered pretty good, I thought it would be a good idea to change the piston ring as well.

I can not find a replacement for Part #52431-KA3-731 anywhere. I have been to the Kayaba website, Race Tech, Ebay, I can not find one anywhere. Looks like Kayaba made a 40mm piston ring for the YZ80's/85's several years back, other than that, I have come up empty.

Anyone have any ideas ???

Thanks Michael !!!

[KTM520EXC]

Specs; Piston Ring - 39.86mm / Seal Head Body 39.98 mm Piston Ring w/o uninstalling - ~ 40mm Diam / 8.13mm Tall

I won't know what the thickness is until I remove from Shock Shaft.

Michael

[Smacaroni]

Did ya try the TT store? If they don't have it, can't get it, send Dillon Brothers a message, they may be able to help you out: http://www.partsfish.com/oemparts/partsearch/honda_motorcycle

Edited May 30, 2014 by Smacaroni

[KTM520EXC]

https://www.thumpertalk.com/topic/1088780-1990-xr200r-remote-reservior-shock-rebuild-parts-availability/?p=11885022

 

I have updated my project on the shock, in case anyone is interested in following. 

 

Michael