First of all, are you certain it’s the upper pulley? I’m asking because I’ve never heard of nor experienced a Shimano ceramic bushing squeak before, and especially after so many remedial actions too. I guess the rubber lip seals, if run dry, may squeak, but if you oil/grease the bushing, the rubber seals will inevitably be coated too. Come to think of it, did you install the metal pulley end caps “inside” the rubber lip seals?
In any case, if you’re looking for replacements, pretty much any replacement with the same pulley size will work. I like the Tacx ones <https://www.amazon.com/dp/B00Q4Q15IA/ref=cm_sw_em_r_mt_dp_Z0YsFbB3AEJCH>, but there are others, like from Velo Orange <https://velo-orange.com/products/vo-grand-cru-sealed-bearing-universal-jockey-wheels>. In all cases, you’ll likely lose the lateral float function of the Shimano ceramic bushing; but if your derailleur is adjusted spot-on, you shouldn’t have a problem. Good luck! -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/rbw-owners-bunch/60714682-e929-4e11-81ed-e75fbc196afeo%40googlegroups.com.
