I've got it

The biggest investment in my whole racing carreer
http://desmodue.kicks-ass.net/desmod...make-me-faster A friend of mine told me I have to make it tested on a machine (???), the seller told me there was no point making it reworked. So what do I do? Any idea of how to know if a shock is in good condition before fitting it?
Cheers
Tonio.