MX-5 NA Ultra Racing Front Anti-Roll Bar

The factory suspension on the NA MX-5 is legendary for its mechanical grip, but it is also known for its significant “nautical” body roll. When you tip an NA into a corner, the car leans heavily before the tires truly bite. This delay in weight transfer makes the steering feel lazy and can lead to a loss of front-end camber just when you need it most.

The Ultra Racing Front Sway Bar is designed to provide the lateral stiffness the chassis lacks from the factory. By increasing the torsional resistance of the front axle, we’re forcing the car to stay flatter through the apex, keeping the tire contact patch more consistent and making the steering feel significantly more “point-and-shoot.”

What’s inside the kit:

• 23 mm Solid Spring Steel Sway Bar – A significant jump in stiffness over the hollow or thin factory units.
  • Solid Core Construction: Unlike hollow bars that can “kink” under extreme stress, this solid-core bar provides linear resistance throughout the entire cornering arc.
  • One-Piece Design: Manufactured from a single piece of high-tensile steel to eliminate weak points at the bends.
  • Pro Tip: Because this bar is significantly stiffer than stock, we highly recommend pairing it with our Sway Bar Brace Kit to ensure your factory mounting tabs don’t snap under the increased load.

• Reinforced Rubber Mounting Bushings – Included to provide a balanced interface between the bar and the subframe.
  • Street-Friendly Compliance: These rubber bushings are stiffer than your 30-year-old factory units but still offer enough damping to prevent excessive road noise or “clunking” through the chassis.
  • Why they’re here: This setup is ideal for enthusiasts who want the flatter cornering of a heavy-duty bar without the maintenance or potential “squeak” of polyurethane.
  • Pro Tip: Use a silicone-based lubricant during installation to ensure the bar rotates smoothly within the rubber housing.

Key benefits:

• Reduced Body Roll: The car stays noticeably flatter during high-speed transitions and long sweepers.
• Stabilized Camber: By limiting roll, you prevent the front wheels from leaning “over” the tire, preserving your alignment settings mid-corner.
• Improved Turn-In: The front end reacts more quickly to steering inputs as the weight transfer is managed more efficiently.
• Better Mechanical Balance: For cars experiencing “push” or understeer, a stiffer front bar (counter-intuitively) can often help stabilize the front end when paired with the right tire pressures.

This kit is for you if:

• You find the “body lean” of your NA distracting or confidence-inspiring.
• You are running sticky tires (200 Treadwear or similar) and find the stock bar is overwhelmed.
• You want to sharpen your steering response without moving to extremely stiff (and uncomfortable) coilover spring rates.

This kit is NOT for you if:

• You already have “heavy” understeer: Adding a stiffer front bar generally increases understeer (unless other suspension changes are made).
• You are building a dedicated drift car: Some drifters prefer a softer front to allow for more weight transfer to the outside tire for lead-car stability.
• You haven’t reinforced your mounts: As mentioned, a 23 mm solid bar puts immense stress on the thin factory NA mounting tabs.

Fits all 1989-1997 models – NA (Mk1).

Shipping worldwide.