Mazda MX-5 NA/NB Tubular Front Subframe with Roll Center Correction - Cybul

Mazda MX-5 NA/NB Tubular Front Subframe with Roll Center Correction

Do you want to make the front end of your Mazda MX-5 NA or NB stiffer, lighter, and better suited for a lowered or performance-oriented setup? This Cybul tubular front subframe replaces the original subframe with a strong chromoly tube construction with integrated roll center correction.

In lowered MX-5s, the position of the control arms changes, which can lead to less favorable geometry and make the car feel less direct or predictable. This subframe offers raised mounting points for the control arms, correcting the roll center position. This is especially interesting for track day, drift, street, and performance builds where steering feel, grip, and chassis response are important.

In addition to roll center correction, the subframe is lighter and stiffer than the original subframe. The chromoly tube construction with extra reinforcements creates more space around the engine bay, making it also interesting for engine conversions, such as larger engines or V8 swaps. At the same time, the original mounting points for engine mounts, steering rack, plastic covers, and radiator are retained, ensuring neat integration into the car.

After correcting the roll center, it's important to also address bump steer. For this, suitable lowered tie rod ends or tie rods are recommended, so that the steering geometry aligns with the adjusted control arm position.

Technical explanation

The subframe is designed for the Mazda MX-5 NA and NB and replaces the original front subframe with a strong chromoly tube construction. The control arm mounting points are raised for roll center correction, with a correction of approximately 18-20 mm. This particularly helps lowered cars to improve the suspension geometry.

According to Cybul, the subframe is approximately 15% lighter than the original subframe without an additional rear brace. When the included rear brace is factored in, the weight saving is around 12% compared to OEM. At the same time, the construction remains suitable for performance use, drift, track days, and engine swap applications.

The subframe retains the original mounting points for the steering rack, engine mounts, radiator, and plastic covers, among others. This ensures the installation remains neatly integrated into the MX-5, while creating more space around the engine bay. This also makes this subframe interesting for builds with larger engines or V8 swaps.