kx125 fork oil weight and quantity

Questions and comments about converting to beefier forks..
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gertie6car
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kx125 fork oil weight and quantity

Post by gertie6car »

Hi Guys,

My kdx rebuild is going well!. I have just bought a 2000 kx125 usd front end and will be replacing the seals in the forks this weekend. Can anyone advise the quantity and weight of oil I should use?

Thanks in advance

Gert
gertie6car
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Post by gertie6car »

16 views and no one knows what level? surely not please help if you can cheers!!!

gert
muddertrucker
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Post by muddertrucker »

Someone had posted the link to team greens web site wich gave recommondation for oil weight and viscosity but I can't find it anymore. If my memory sevres me right it said 5 weight a t 90 mm for both 125 and 250. These recommendation were for stock forks in off road (not mx track) riding conditions. I put my 97s at 100mm.

Is there a post somewhere on this site that shows how each adjustment affects the handling of the bike ie: stiffer springs do..... and more oil does......? I'd like to tune my supension for optimum performance but have no idea how. If I knew more or less how the oil level affected the ride before I left for the trail I might be able to notice the difference. I seem to have trouble noticing the effect that minor tuning (playing with clickers)has so imagine How useless I am at diciding if I need to add or remove shims from the stack.
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gertie6car
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Post by gertie6car »

Hi muddertrucker,

thanks for the response. Looks like I am going to have to buy a manual for the forks to see what oil level weight is required, had hoped someone on here would have know.

cheers

Gert
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Indawoods
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Post by Indawoods »

It's subjective.... are you riding MX tracks like the frontend was intended? Probably not... usually between 95 and 105mm is what most use. I suggest 5wt oil.

FYI... The manual will give you a between figure too.
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kawagumby
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Post by kawagumby »

If they barely bottom on the absolute worst stuff with the suggested levels, it's about right. Too much bottoming, add oil - too harsh, remove oil. Like Inda said, it depends on how and where you ride.
1994 KDX200, Beta 200rr, yz125, yz250, kx100 modded for adult, gasgas contact 250.
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