Tom,

For the amount of weight you will be removing, the shock shouldn't need that much work. Now if the shock is sprung with a heavy spring, then you would want to look at that. Probably will be able to simple set the shock as is, and it will be fine.

Of course that all depends on what shape the shock is in to begin with. If it needs to be rebuild, and recharged, then you will want to do that no matter what.

Thanks,
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Charles Gallant