SkidNation Chassis Integrity Pro Bundle

If you’ve already addressed the basics and are looking to eliminate the last remnants of chassis flex in your NA or NB, this is the definitive structural package. While our Fundamentals Kit handles the most common “shivers,” the Chassis Integrity Pro Bundle turns the entire car into a rigid, unified platform.

This isn’t just about comfort; it’s about performance. When the chassis stops twisting, your alignment stays consistent under load, and your suspension can finally work with 100% efficiency. This bundle is designed for the driver who wants their MX-5 to feel like a modern, purpose-built sports car—composed, direct, and rattle-free.

Chassis Integrity Pro Bundle

What’s inside the kit:

• Butterfly Combo Brace – This is the structural heart of the kit. It doesn’t just reinforce the floor; it ties the left and right sides of the car together into a single rigid unit.
  • Full 2 mm stainless steel construction for maximum stiffness and zero rust concerns.
  • Extended frame rails included as part of the design, protecting your floor pans while bracing the center of the car.
  • Central “X” brace connects the rails to provide incredible torsional rigidity, effectively “closing” the open-top tub.
  • Low-profile design ensures you maintain as much ground clearance as possible.

• Fender Braces – Often the “missing link” in MX-5 bracing, these reinforce the weak point between the door hinges and the front shock towers.
  • Three variants available: Choose between 3 mm Steel (Black or White powder-coated) for maximum rigidity, or 5 mm Aluminium (Raw Silver) if you want the strength while keeping weight to a minimum.
  • Triangulates the front end, significantly reducing the “scuttle shake” you feel through the steering wheel over bumps.
  • Hidden installation: Once fitted under the front wings, they are invisible but the difference in steering precision is immediate.

• Front Strut Tower Brace – The classic upgrade to keep your suspension geometry stable.
  • Reduces tower deflection during hard cornering to keep your contact patch flat on the road.
  • Sturdy steel construction with a durable finish that stands up to engine bay heat.
  • Easy bolt-on install that serves as a visual and functional anchor for the front end.

• Delrin Door Bushings – The final piece of the puzzle to turn your doors into structural members.
  • 21 mm thickness: We believe these are the thickest on the market, leaving no room for the door to move within the latch.
  • 20° bevel design: Ensures the door closes easily without excessive force.
  • Zero-maintenance Delrin: High wear resistance and stiffness that won’t crack over time.
  • Pro Tip: A light wipe of silicone oil on the metal door cups makes these operate silently and smoothly.

Key benefits

• Maximum torsional rigidity for the NA/NB platform, making the car feel “of a piece.”
• Elimination of scuttle shake and cowl vibrations, even with stiff track-focused suspension.
• Superior steering response by removing the “lag” caused by the chassis twisting before the wheels turn.
• Complete floor protection from the extended frame rails, shielding your car from speed bumps and debris.
• A “quiet” cabin: Reducing flex naturally stops many of the interior squeaks and rattles common in older MX-5s.

This kit is for you if:

• You are building a dedicated track car or a high-performance “canyon carver.”
• You have installed (or plan to install) high-spring-rate coilovers and sticky tires.
• You are sensitive to chassis vibrations and want the most solid-feeling MX-5 possible.
• You want the highest level of bracing available before moving to a full weld-in roll cage.

This kit is NOT for you if:

• You are on a tight budget: If you just want a better daily driver, the Fundamentals Kit is a more cost-effective starting point.
• Weight is your only priority: While the gain in handling is massive, this kit does add a noticeable amount of material (and weight) to the car.
• You want a 100% “stock” feel: This kit will make the car feel significantly more mechanical and “stiff,” which may not suit owners looking for a soft, original cruiser.