What Is a NASCAR Stock Car? Definition & Key Features #3260861 (License: Personal Use)

A NASCAR stock car is a purpose-built race vehicle derived from production models but heavily modified for speed, durability, and safety on oval tracks. It features a steel tube-frame chassis, a sealed V8 engine, aerodynamic bodywork, and advanced safety systems like the HANS device and roll cage. Though called “stock,” modern versions share only superficial resemblance to road-going cars.

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