Best I can tell you is I have my 83’ 650 pistons in front of me and they measure 30mm by a ruler (don’t have a caliper handy).
‘85 is different or someone swapped the calipers on it is my guess. -- Dwayne Wells Sent from my iPhone 6S On Feb 15, 2018, at 6:01 PM, "9533z...@gmail.com<mailto:9533z...@gmail.com>" <9533z...@gmail.com<mailto:9533z...@gmail.com>> wrote: 85 CB650SC and almost to the end of its winter brake system rebuild. Did both master cylinders, lines and right side caliper. Was in the reassembly stage of the left caliper and after installing new seals i was about to push the new pistons into the caliper when they dropped in right past the seals. The new pistons are 30mm. The ones that came out of the caliper are 32mm. Immediately thought I ordered the wrong part but checked the fiche and part numbers, year, model of bike and everything is correct. Does anyone know if the correct size pistons on this bike are 32 or 30 mm? Its possible a previous owner (there have been at least a couple) may have installed a different caliper, but on only one side of the bike? Am I missing something? Thanks! -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To unsubscribe from this group and stop receiving emails from it, send an email to nighthawk_lovers+unsubscr...@googlegroups.com<mailto:nighthawk_lovers+unsubscr...@googlegroups.com>. To post to this group, send email to nighthawk_lovers@googlegroups.com<mailto:nighthawk_lovers@googlegroups.com>. Visit this group at https://groups.google.com/group/nighthawk_lovers. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To unsubscribe from this group and stop receiving emails from it, send an email to nighthawk_lovers+unsubscr...@googlegroups.com. To post to this group, send email to nighthawk_lovers@googlegroups.com. Visit this group at https://groups.google.com/group/nighthawk_lovers. For more options, visit https://groups.google.com/d/optout.
