MX-5 Roll Bars & Roll Cages

If you’re regularly tracking your MX-5, chances are you’re considering whether you need a roll cage, half-cage (for the rear only) or roll bar. The MX-5 Mk1 and Mk2 do not have built-in rollover protection, but the Mk3 and Mk4 do. So, if you partake in any sporty driving — whether on the road, track days, or sanctioned motorsport events — we would always recommend a half-cage at least.

Whilst rollovers are uncommon, we’ve personally rolled an MX-5 on a public road and, without a half-cage in place, the accident could have been much worse than it was. A roll cage (and a roll bar, though to a lesser extent) will absorb and redistribute impact, lessening the likelihood of the cockpit area being crushed. Plenty of MX-5 drivers install roll bars and cages and, while rollover protection is a legitimate reason, another common motivation is handling the roadster’s body flex.

If you own an NA (Mk1) or NB (Mk2), you’ll know these models are featherweights, and that light build comes with a bit of body flex. A cage can help stiffen things up, giving you more control when pushing hard.

About our range of MX-5 Roll Cages & Roll Bars

Want the best of both worlds? Consider a half cage, like those from GC Fabrications. These bolt-in beauties offer a fantastic balance between added rigidity and safer street use. In a rollover, a Miata half cage will provide rollover protection. A Miata half cage is an excellent compromise for street-driven cars, as you get added protection with less chance of smacking your head on the metal bars. 

The GC Fabrications GC2 Half Cage is an MSA-specified CDS tube construction for NA (Mk1) and NB (Mk2) models. At BOFI Racing, we also supply the Cybul Half Cage for the MX-5 NC, which is hand-welded and equipped with a harness bar. For a full cage, Cybul also sells full roll cages, like this roll cage for the Miata NC (Mk3).

Frequently Asked Questions

Does a Mazda MX-5 need a roll cage?

MX-5s, like many lightweight sports cars, have a relatively low centre of gravity and well-balanced weight distribution. This typically means they’re less likely to roll over than a taller vehicle with a higher centre of gravity, but doesn’t mean it can’t happen. A roll cage will maintain the vehicle’s structural integrity in case of an accident, which are more likely for track day racers.

You should wear a crash helmet and a proper 5 or 6-point harness, rather than your standard 3-point seat belts, even on public roads, with a full roll cage in place.

Are roll cages legal in the UK?

Yes, roll cages are legal in the UK, but need to comply with a few conditions to be safely driven on public roads. That means they can’t block driver visibility or impact airbag functions, nor should they impact the operation of the seatbelts (as per the MOT requirements).

It’s also worth noting that you need to disclose permanent modifications to your insurer. A roll cage is likely to bring your premium up as it’ll be classified as a modification intended for motorsports. Roll cages are generally considered a liability.

Does a roll cage improve handling and cowl shake?

Absolutely. A roll cage doesn’t just protect, it’s a serious upgrade for handling. By stiffening the body, it minimises body roll and cowl shake, which is a common quirk in convertibles like the MX-5. Older models, like the NA and NB, are particularly known for a bit of wobble when things get bumpy. A roll cage tackles that, giving you a more solid feel and tight control through corners.