Got an old Simplex rear derailleur with broken pulley wheels on it?

Here's a tip:  Most old Suntour rear derailleur pulleys will work as replacements for the broken Simplex pulleys. The old pulley bolts are usually hard to remove so soak them with WD-40 overnight first Most pulley bolts take a 9 mm wrench.  Be sure to use the Suntour center bushing and caps on the Simplex derailleur. Also be sure to clean and lube them before reinstalling on your old Simplex derailleur.


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