Pitted forks - how bad are these?

[Jamieg285]

Just been to look at a potential purchase.  Overall not too bad, but the biggest concern are the upper forks.  As you can see in these pics(n.b. the pictures don't really do them justice, they look rougher in real life.), the uppers are pitting quite badly.  It is well above the travel, so won't affect the seals, however, how quickly are these likely to deteriorate?  Is this something that should be a reason not to buy the bike?








On a related note, would the uppers from my boxeye swap directly with these?