National Association for "Stock" Cars That Look Stock But Actually Aren't Stock Automobile Racing

The cars are made of steel tube frames with roll cages, making up the space frame chassis, with 89mm ground clearance. The cars run slick tyres from Goodyear. They have wheelbases of 2794mm, measure 5036mm in length (around the same as an F1 car), 1956mm in width and are 1378mm high. The minimum weight for cars with the driver and fuel is 1576kg.

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Powered by naturally-aspirated 5.8-litre V8 engines, the cars produce around 725bhp unrestricted (having recently been decreased), or 445bhp with restrictor plates (which are used at specific tracks). Torque levels measure 530ft lb and the fuel capacity at most tracks is 68 litres, delivered through electronic fuel injection – which only arrived in the series in 2012. In 2015 top speeds were around 200mph, sometimes over and sometimes under depending on the track.

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The front-engine, rear-wheel-drive cars are said to be based off current road car models – the Ford Mondeo (Fusion), Toyota Camry and Chevrolet SS – but the only real similarity is the look. This was brought in for the Generation 6 car through improving the visuals of the cars to make them better resemble machines on the road, as well as helping to differentiate the manufacturers involved.