If you've upgraded your NA or NB MX-5 Miata with that set of coilovers you've been eying, the next step to dramatically improve your car's handling is dialing in your sway bar setup. Proper sway bar tuning transforms the feel of your Miata, sharpening turn-in, reducing body roll, and making the most of your coilover investment. Without the right sway bars, and proper reinforcement, you’re leaving serious performance on the table.

Best Sway Bar Setups After Installing NA Miata Coilovers, MX5 NA Coilovers, or NB Miata Coilovers

The Miata’s light weight and perfect 50/50 balance means sway bars have a huge impact. Whether you're cruising the canyons or chasing lap times, the best sway bar combo for most NA and NB Miatas is:

• Front: 1.125" tubular or 1.0" solid front sway bar

• Rear: Stock NB rear sway bar or the rare OEM Mazdaspeed Miata rear sway bar

This setup maximizes front-end grip while keeping rear-end rotation lively — perfect for the Miata’s natural handling characteristics.

However, OEM Mazdaspeed rear sway bars are extremely hard to find today. That's why we developed the R Theory Motorsports SBA (Sway Bar Adapter), a simple, bolt-on solution that stiffens your factory rear bar without chasing down rare parts.

Why You Must Reinforce Your Front Mounts After Upgrading Coilovers and Sway Bars

If you're serious enough to upgrade to coilovers on your NA or NB MX-5 Miata, you’re already demanding more from your chassis. Stronger sway bars dramatically increase stress at the front sway bar mounts and unfortunately, Miata front mounts are a known weak point.

Without reinforcement, it’s only a matter of time before they crack or rip out completely under hard cornering.

That’s why we strongly recommend installing our R Theory Front Sway Bar Reinforcement Blocks. They distribute the load across a much larger area of the frame rail, virtually eliminating the risk of sway bar mount failure, a must-have for anyone who drives their Miata hard.

Fine-Tuning With Adjustable Endlinks for NA Miata Coilovers, MX5 NA Coilovers, and NB Miata Coilovers

Once you have coilovers and upgraded sway bars, adjustable endlinks are crucial for dialing everything in perfectly. When you lower your NA or NB Miata with coilovers, the sway bars can develop pre-load, tension even when the car is at rest, which leads to inconsistent handling from side to side.

Our R Theory Motorsports Adjustable Endlinks allow you to completely remove pre-load. This ensures predictable, even suspension behavior whether you're cornering left or right, giving you maximum grip and confidence.

They’re also built tough enough to handle the extra stress that beefier sway bars create.

Final Thoughts: Build the Miata You've Always Dreamed Of

• Install a stiff front sway bar and modest rear bar after upgrading coilovers.
• Reinforce your front sway bar mounts with our Reinforcement Blocks.
• Use Adjustable Endlinks to remove pre-load and maximize consistency.
• Stiffen your OEM rear sway bar with our SBA instead of hunting rare parts.

If you’re serious about maximizing your Miata's handling potential, before or after installing your dream set of coilovers, hook yourself up with the right sway bar setup and reinforce the weak links.

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