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1990-05 Hard Dog Sport "Fat Boy" roll bar

Shown with the optional vinyl cover
1990-05 Hard Dog Sport "Fat Boy" roll bar
Fat tubing and hard top compatibility. Previously known as the "Hard Core Hard Top"

Made in the USA

This item will be dropshipped from the manufacturer.


Note: this bar is also known as the (deep breath) Hard Dog M2 Hard Core Hard Top. We gave it a different name to clarify what's going on, as it's closer to a Sport than a Hard Core.
Looking for a bar that will allow the use of hardtop side latches, but with the stronger 1.75" diameter tubing used in the Hard Core as well as harness mounting points and double diagonals? Here you go. This is an excellent and popular street option. We have it on a number of our own cars.
This bar combines the geometry of the Sport with the thick Hard Core tubing. This means it is SCCA Solo I legal, but it can be difficult to get low enough to pass a helmet clearance test.
In order to work with glass windows, this bar uses harness tabs instead of a harness bar. However, some SCCA regs do not allow harnesses to share mounting points. For that situation, we also offer the HD bolt-in harness bar

Shown here with the optional vinyl wrap.
Fits all NA and NB Miatas. Compatible with stock glass windows. 

Shipping note: These bars will be drop-shipped from the manufacturer. These bars are usually kept in stock. If not, depending on where the bars are in the production process, it could take approximately 2-6 weeks for delivery. If you would like one shipped outside the US, please contact Hard Dog Fabrication directly.

Additional Information

Additional Information

Part number 20-28020 2 DIAG
TÜV approval available Yes
Fits: 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1999, 2000, 2001, 2002, 2003, 2004 (non-MSM), 2005 (non-MSM), MSM
Manufacturer Hard Dog
Flyin' Miata exclusive No
Fits Exocet? No
Proposition 65 Warning: Cancer and reproductive harm
California emissions No

Customer Reviews 1 item(s)

Roll bar
The bar is amazing build to last. Hard where backing plates amazing super strong reliable. My only problem is that for the money your dropping you think that there would be instructions that would come with it. Yes it's pretty straight forward but there was a lot of looking stuff up and looking over. But all and all awesome product. Would totally recommend it worth the price amazing.

Note from Flyin' Miata: The installation instructions can be found on the Hard Dog website.
Review by Squazda / (Posted on 6/4/2016)
Instructions for this part are not currently available online.