RACING BRAKE ROTOR – Premium cast iron rotor designed for sprint cars, modifieds, and other competition vehicles requiring dependable braking performance in demanding racing environments., DRILLED & SCALLOPED DESIGN – Cross-drilled face and scalloped outer edge help reduce rotating weight while maintaining strength and improving braking response during high-performance racing conditions., VENTED COOLING CONSTRUCTION – Vented cast iron rotor design improves airflow and heat dissipation to maintain consistent braking performance under repeated heavy braking., PRECISION ROTOR DIMENSIONS – Measures 12.19 inches in diameter and .810 inch thick with an 8 x 7 inch bolt circle, making it compatible with many sprint car inboard brake setups., LIGHTWEIGHT COMPETITION BUILD – Weighs approximately 5.5.