Your car might be running OEM or aftermarket sway bars to control body roll, but is it performing at its full potential? Your suspension setup is only as good as your ability to dial it in. That’s where the R Theory Motorsports Universal Sway Bar Adjuster (SBA) comes in, a patent-pending game-changer for performance enthusiasts who demand control and versatility from their sway bar system.

Whether you’re daily driving, carving canyons, or shaving tenths on the track, our SBA puts precision in your hands.

What Is the SBA?

The Universal Sway Bar Adjuster is a bolt-on system that allows you to change your sway bar’s effective stiffness without removing or replacing the bar itself. Designed to work with nearly any sway bar, our adjuster clamps securely onto the bar and relocates the endlink mounting point, allowing for mechanical adjustment in minutes!

No welding. No guesswork. No downtime.

How It Works

A traditional sway bar’s stiffness is determined by the diameter of the bar and the length of its arms. While you can’t make your sway bar thicker, you can shorten the arm to make it stiffer. That’s the principle behind the SBA.

Mount the SBA pointing inward toward the center of the bar for a stiffer setting. Mount it pointing outward toward the end of the bar for a softer one. The SBA gives you three mounting holes, so you can fine-tune the stiffness to suit your setup and driving style.

Once positioned, simply tighten the clamping bolts and reconnect your endlink. You’re done.

Whether in the garage, the paddock, or between autocross runs, you can shift your front or rear balance in minutes.

Why It Matters

Suspension balance is affected by every component in your setup: spring rates, damping, tire pressures, alignment, and more. When those variables shift, your sway bar should adapt too.

The SBA gives you that flexibility. It allows you to fine-tune balance with surgical precision, increase roll stiffness without swapping bars. You can even soften your sway bar to improve your ride quality for daily use.

It’s also an ideal solution for platforms with limited aftermarket sway bar support or unusual setups.

On the street:

• Soften the bar for better comfort and maximum grip over uneven pavement.
• Dial it up for spirited weekend drives or canyon runs.

On the track:

• Adjust your handling balance to reduce understeer or oversteer.
• Tweak your setup between sessions to compensate for tire wear or changing conditions.

Who Is the SBA For?

• Drivers who want to make their daily driver or sports car more fun without breaking the bank.
• Enthusiasts looking to soften their rear suspension to reduce twitchiness or oversteer.
• Racers who want to stiffen their already-upgraded aftermarket sway bar even further.
• Builders whose cars have limited or no sway bar upgrade options available.

Built to Take a Beating

This isn’t a lightweight gimmick. Like all R Theory products, the SBA was designed with our "simple but strong" philosophy in mind.

• CNC laser-cut 300 series stainless steel
• Grade 10.9 hardware
• Single-shear mounting tab with a reinforced backing plate
• Multiple methods of locking to resist unwanted slippage

It’s built to handle everything from daily commutes to repeated track abuse.

Universal Compatibility

Whether you're building a Miata, S2000, Civic, or something fully custom, the SBA is designed to work with most straight sway bars that use bearing-style endlinks—the kind that use a ball joint or heim joint rather than the rubber-bushed D-shaped mounts often found on trucks or older vehicles.

If your sway bar setup uses a spherical rod end or adjustable endlink, there's a good chance the SBA will work with your build.

Final Thoughts

Sway bars are one of the most powerful tools in a chassis tuner’s arsenal. But without adjustability, they’re just fixed compromises.

With the R Theory SBA, you don’t compromise, you adapt.

Explore the Universal Sway Bar Adjuster now:
Universal Sway Bar Adjuster – R Theory Motorsports

If you’re not adjusting your sway bar like this, you’re leaving performance on the table.