I did talk to Rich the owner of Rivco last week about a couple of parts going out that had some slight issues. He stated that all items are inspected when they come back from Chroming, but obviously once in a while something gets by. We were actually with them for 5 days at a Spyder Rally in Springfield MO.
We have had very good luck with their products and have actually known them for 20 years or so. We have never once had one customer from them that was not taken care of if there was an issue.
Every manufacturer handles warranty items differently, with Rivco they mostly take care of it themselves.

A long time ago we did send items out for warranty replacement and then hope the customer sends back the old part, that changed after we were stuck for hundreds of dollars on multiple items. A lot of payments are PayPal, so you can't get your money back and even with a credit card people will do a charge back and state they have no idea what happened to the part.