Chain wear

I just recently put a DID x-ring chain and IronMan sprockets on my bike. After about 100 miles, I notice that the one side of the chain shows some wearing where is going thru the chain guide. The chain guard is in pretty good shape. Is this normal or should I replace the rear chain guide?

Basicaly it is normal. However it does not meen that you chain guide is not worn out. Check documentation about wear marks.

Thanks, I appreciate your help.

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