Enduro Bearings ZERO CX rear derailleur pulley

Machined from solid Delrin at our California machine shop, not molded, they are much harder and more precise than any competitor’s jockey wheels. These are machined smooth for easy cleaning and highly recommended for cross competition or mountain bike usage. Of course they work perfectly for any Road application as well. Where aluminum jockey wheels are loud and deteriorate almost immediately after installing, Enduro Bearings jockey wheels will shift perfectly and precisely a year or two from now as the day you installed them.