I've been looking at a really nice 2007 WR450F that's been used as a SM for the last year or so. It's really nice, well set up and clean with seemingly very low miles but I noticed that the main fame spar on the left side has been eaten into by the chain. I would say that there is about 1, maybe 2mm of material missing from the frame spar.
The current owner had not noticed it and was genuinely surprised when i pointed it out.
Is this too much damage? From all I hear further damage can be avoided by buying a aftermarket chain guide for the front or by wrapping the frame spar in that area with tough material (like nomex or something).
I would buy the bike but I'm worried about a potentially weakened frame. Any advice would be appreciated.
Sorry I did not take a picture of it.
TIA, - picard