You’ll notice a previous post about a year ago on this same topic. (Which Maltby Clubs Officially Conform…)
I just selected “the best answer” so it would be easier to find.
Everything they make conforms to USGA regulations (except the Defiant driver). Not all have been submitted for testing and right now the USGA database for clubs other than drivers is down. The driver database is active. Here’s the USGA link for the drivers that officially conform. http://www.usga.org/ConformingGolfClub/conforming_golf_club.asp
Type in “The Golfworks” (without quotes) to access the driver list of those that conform. (It’s easier to type in the search bar instead of downloading the PDF.)
The current models KE4 ST-2 and 2A are on the list.
I believe the DBM irons are also officially approved. Britt will know what others are also officially on the list now.
Hope this helps! Michael