In 2021, the sport was in a similar developmental mood, as it rolled out its Gen-7 model ... Teams must buy the tubular frame chassis and other parts from NASCAR’s appointed builder, the ...
NASCAR Cup Series ... Jimmie Johnson's 2011 Gen 6 chassis had the second-highest bid at $21,000 with 42 bids. This chassis includes a working engine (without battery), a 7-gallon fuel tank ...