Th3_V1k1ng

I have blue spots on the front of the divi 900, this is going on the back...AND... you cant chuck blue spots on in place of a lot of these as the centres are wider on the blue spots than on the old callipers. I thought about a blue spot on the rear, as I have some spare, when I tried it, centre was out by about 20mm. To fit blue spots to the rear of the divi 900, or the front/rear of the FZ750 1985, I'd need to get adapter plates, which I might well do for the FZ front. Anyway, ordered some 45.3mm seal sets from powerhouse on fleabay. Another guy on this forum has recommended them for seals for yammy brake callipers.

calliper is an old fzr 600 front calliper. Unsure what year bike it came from, but theres an 94 UA stamped on the calliper. I ordered some 43mm seals, good japanese ones. Come to strip the caliper, cleaned it, no solvent and no brake cleaner or brake fluid.. tiny bit of red grease to slide the piston in, wont go. It seems like the new rubber seals are to small, to allow the piston to go back in. (piston is all nice and shiney, no marks, scratches or dents) My Question is.... is this sumitomo calliper in fact 43mm as the man in the shop says.. OR... as my metal rule tells me 44mm, which means the inner bore of the piston hole.. might well be 45mm. I've found on fleabay, some 45.3mm seals. I cant remember where I put my vernier to measure, so eyeballed via the metal ruler, or else I'd have a much better idea. Any ideas, suggestions? These are only the old 2 pot callipers.. 1 either side. Grey sumitomo. I can take a pic, but if your a yammy guy, you'll know what I'm on about.