lighter oil in the forks

I have heard lighter oil in the forks can soften up the suspension. I am not a very big guy 165# and the front forks are killin my arms. I have heard putting 5 weight in them can make a big difference. Does anybody know what stock weight is? does it really make a significant difference? Any body recommend an oil or even ATF?

-Autogami

99 yz400f

5wt is what you are suppose to run in the forks.

you can find 2.5 wt out there. But you may want to look into a revalve on the 99 forks. Would do wonders for you

I agree with trying a lighter weight oil. ATF will be a good start.

Standard ATF may work OK as a fork oil, but it is considerably heavier than 5 wt. Golden Spectro 85-150 is a good 5 wt equivalent oil. PJ1 makes a good 2.5 wt fork oil.

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