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ND Hard Dog Sport roll bar

ND Hard Dog Sport roll bar
ND Hard Dog Sport roll bar

Keep the pavement off your head! Legal for NASA use.

Made in the USA

This item will be dropshipped from the manufacturer.


The legendary Hard Dog roll bars are now available for the ND chassis! This bar is legal for use with NASA. Do not believe claims to the contrary.

Please note: we believe there is an excellent chance this bar will fit a 124 Spider, but we have not been able to confirm yet.

We worked with Hard Dog to give you as much overhead protection as possible. The bar is as tall as possible, but does not restrict use of the soft top or seat travel. It's also compatible with the factory windblocker and all the storage behind the seats.

The factory aluminum hoops may not protect you much, but Mazda built nice solid mounting points into the car for them. So this bar uses them to tie into the chassis, then adds two rear legs for extra strength. The bar is made of 1.75" DOM tubing with a 0.120" wall, almost overkill for such a light car. The new rear legs come with 3/16" backing plates that require six holes to be drilled in the chassis. 

The bar is tall enough to touch the inner lining on the GT soft top, but not press hard against it. It fully clears the single-thickness Club top.

Includes a harness bar that also anchors the soft top latch, and retains full function of the stock seatbelts. The optional double diagonals are spread at the top to provide maximum visibility out the back. Our favorite is the black bar with double diagonals, as you see here.

Full use of the cubbys behind the seat is retained. The roll bar does not affect them at all, unlike some other designs.

Available in black powdercoat or polished stainless steel. That's right, real stainless and not a cheesy chrome plating that can cause strength problems. Fitted vinyl or leather covers are also an option, which include SFI-rated formed padding.

Will be drop-shipped from the manufacturer. Depending on inventory levels, it may take a couple of weeks to ship. Stainless steel bars will ship in 4-6 weeks. Please plan accordingly!

Not compatible with the Retractable Fastback.

Additional Information

Additional Information

Part number 20-19020
Fits: 2016 MX-5 soft top, 2017 MX-5 soft top, 2017 Fiat 124 Spider, 2018 MX-5 soft top, 2018 Fiat 124 Spider, 2019 Fiat 124 Spider, 2020 Fiat 124 Spider
Manufacturer Hard Dog
Flyin' Miata exclusive No
Fits Exocet? No
Proposition 65 Warning: Cancer and reproductive harm
California emissions No

Customer Reviews 5 item(s)

Good product, very solid, good quality
Reasonable install, took about 4-5 hours for this first timer. Instructions moslty clear but could have used more photos/instructions on trimming of plastic structures behind seats. Also would be nice to have products available to cover the defects created in those panels to accomodate the roll bar.
Review by Shanimal / (Posted on 12/6/2019)
Safety carries no price-tag.
This is a tiny car and trying to fit a huge piece of metal behind the seats is a chore... that should not be a surprise to you. I found the fitment very good, it's now months later and I remain very happy with this bar. In fact, happier. I spent spare moments over several weekends on the install, all by myself. It is a lot of work, a lot of R & R, but absolutely worth every penny... and safety should be be your number one upgrade. P.S. When you pull apart the Mazda "rollover protection" you will be shocked and disgusted at how useless that pretty piece actually is. Or was, since you're installing this bar. Happy Motoring!
Review by Scott / (Posted on 4/15/2019)
looks great, needs better install instructions/parts
so let me start off by saying this thing looks amazing and adds some stiffness to the car.
when it comes to putting it in the instructions could be better, and if youre paying 700-ish after shipping for a roll bar you shouldnt need to:
1. zip tie your trim onto the bar
2. guesstimate where you need to cut the trim to make the pieces fit, just make a paper template, or better pictures in the instructions
Review by fattywompus / (Posted on 11/7/2017)
Good but needs improvement for install
Very frustrated during the install. The instructions clearly state to reuse factory hardware for the front mount. The punchline? The bolts have a flange and won't clear the brackets and welds used to secure the new seatbelt reel attachment bar. So plan a trip to buy some bolts as the included bolts aren't the same thread pitch as the stock so you can't use those either. Couple that with sloppy measurements on their part (we had to tweak the bar to get all four front bolts to line up and thread them in). I expect better craftsmanship especially when the holes are already oversized to allow for some variance car to car. The holes were off about 1/16".

Other than that I like the product. It is head and shoulders better than the stock hoops for sure.
Review by BP / (Posted on 4/21/2017)
Flyin' Miata's perserverence paid off!
Keith's redesign of this bar as compared to Hard Dog's initial design paid off for us tall people, as he gained a further inch of height with no penalties.

The bar allowed me to run two groups higher up at the 2016 Miatas at Mazda Raceway Laguna Seca event; for which I'm very thankful for.
Review by Richard Dekker / (Posted on 4/16/2017)
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