Can I upgrade to the Nev-R-Lube option on my existing axles?
No, the two bearings were moved closer together and combined into a single sealed cartridge with only one spindle journal size. This required different spindle and hub-drum designs to accommodate the Nev-R-Lube cartridge. In order to upgrade to this option it will require purchasing new axles, hubs-drums and possibly new wheels. The Nev-R-Lube option can only be used with certain wheel offsets.