Gary RVer Emeritus said:The best choice for an older used tow bar would be to send it back to Blue Ox (or one of their certified repair dealers) to have it overhauled, which might even mean an internal rebuild. You end up with a "like new" tow bar that should last another 10 years. Shipping a tow bar back to the factory can get expensive, but a few dealers are factory trained and authorized to do rebuilds. I believe The Hitching Post of Ocala (Florida) is one such.
You can also order a rebuild kit from Blue Ox and DIY.