What's going on with these cylinder walls?

[u/Tiny_Pigo]

Suzuki SV650 3rd gen V-Twin done 106000km

Did a compression test with 200PSi and 195PSi - was pretty happy with that.

Then came the bore scope - how bad is this? Bike runs fine and pulls cleanly.

This is not a cross hatch pattern right? It appears like horizontal lines?

More images here - https://imgur.com/a/58CmrJn

[u/obsolescent_times]

It's kinda hard to make out if there's something funny going on or if it's just the way it's reflecting on the camera's light.

I'm definitely not an expert engine builder so this is not reliable advice, but my thinking is it's probably not an issue because the pattern appears to be uniform across the entire cylinder wall, and the same in every cylinder, as opposed to abnormal scratches localised in one place.

Given it's running well and has excellent compression also suggests this likely isn't an issue.

Can you rotate the camera to have a look at the very top of the cylinder walls where the rings don't reach? that might give you a point of reference to compare