Stifflers Chassis & Suspension Chassis Frame Reinforcement - SR-M02

More than just a place to put your jack... Installed behind the rocker panel pinch weld lip, these rails multi-task by adding strength and stiffness to your Mustangs chassis as well as providing a safe and solid foundation for your jack. Pre-masked areas for welding means no powder coat to grind away, for a quick and easy installation! A must for all track and lowered cars! NOT required on 79-93 convertibles which came with factory installed stiffening supports (Z-rails) along the rocker box.