Sorry buddy..... If it were mine I wouldn't put it back together with that jug. That is about 1/4 the damage that my lower was though. I should take pics of it and post them... I can't believe it ran after the failure, and good at that. My piston was a full seizure, all the way around.

Was the top one perfect?
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MC21
04 NSR50R
93 CBR F2
98 CBR F3 track bike
95 VFR750
89 FL400R Pilot
90 FZR 4/600