I have a Shimano 600 SIS reach mech fitted to my Raleigh Record Ace. The Sun Tour freewheel is 6 speed and I have now noticed a squeak coming from the jockey wheels. Lubrication has not stopped it and I have been persuaded to replace the jockey wheels with a Tacx T4000 pair, which also have 10 teeth on each pulley. I have these on order but am seeking reassurance that these will fit. Does any member have experience of fitting these pulleys to a Shimano 600?
