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Body & Aero

Roll Cage

A welded tubular structure protecting occupants and stiffening the chassis in impacts.

Definition

Bolt-in and weld-in cages meet different racing sanctioning rules.

Cages may require harnesses and fixed seats for full safety benefit.

Related terms

  • DownforceAerodynamic load pushing the car toward the ground at speed, increasing grip.
  • Front SplitterA horizontal extension under the front bumper creating low-pressure airflow and
  • Rear WingAn airfoil mounted on the trunk or hatch producing rear downforce.
  • DiffuserAn underbody expansion accelerating air exit at the rear, reducing pressure and
  • Widebody KitFlared fenders and extended panels covering wider wheels and tires.
  • Hood VentAn opening or duct extracting hot air from the engine bay for cooling.

Category: Body & Aero · Updated August 31, 2026