I was pretty set on reusing the cyl's on this new 21 project, but am a little affraid of building a time bomb.

In both cyl's, you can still see the cross hach(?) pattern almost every where.
Almost cause where the piston rings stop at both ends it barely vissible. Ther are no ridges or flaking either.

Use or not to use? That is the question
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MC21
04 NSR50R
93 CBR F2
98 CBR F3 track bike
95 VFR750
89 FL400R Pilot
90 FZR 4/600