Miata owners call up regularly to say they want an SCCA approved Miata roll bar without knowing what that means. Unless you are actually racing your Miata in SOLO 1 (which is NOT autocross or track days), you do NOT need a SOLO 1 approved Miata roll bar, and you likely don't want a SOLO 1 Miata roll bar.
To understand why, start by standing next to your Miata and look at the curve of the Miata soft top when it is up. All Miata roll bar makers are stuck with that curve which means that the taller SOLO 1 approved Miata roll bars must be more forward in the Miata if they are going to clear the operation of the Miata soft top. More forward means closer to your HEAD which is okay if you have a helmet on and not so okay if you don't!
Therefore, in general, the street use Miata roll bars are lower and further back and the real SOLO 1 Miata roll bars are taller but further forward. Autopower offers both a street Miata roll bar that is relatively lower and further back and a race (SOLO 1) Miata roll bar which is very tall and forward in the Miata; and Harddog also has a full range of Miata roll bar choices as well.
Note that most of the Miata roll bar choices will NOT fit with a factory Miata hard top unless otherwise noted. If in doubt, please contact us for help with your Miata roll bar selection. HAVE YOU ADDED A GLASS WINDOW TOP TO YOUR 1990 to 1997 Miata? The first generation Miata had a PLASTIC rear window from the factory and the roll bars for that first generation assume you still have a plastic window. If you have added an aftermarket glass window to your 1990 to 1997 Miata then you actually need a rollbar for 1999 to 2005 Miata (which had glass rear windows from the factory).