Under old racing homologation rules, automakers needed to build 100 units of a car in order for it to be allowed to race against other production-spec vehicles. Alfa Romeo’s TZ racecar, or Tubolare Zagato, was intended to be a racing car from the get-go, so just 112 units were produced in order to adhere to the regulations.
The TZ was design by famous Italian design house Zagato and boasted an extremely lightweight tubular spaceframe chassis and aluminium bodywork. It thus tipped the scales at just 1,430 lb, light enough for the 112 horsepower 1.6-liter four-cylinder engine under the hood to move the sportscar in a rather expeditious fashion.
With only 112 examples floating around, it’s very likely that you’ll never see an Alfa Romeo TZ in your life. YouTube’s Historic Racing HD not only got the chance to see two of these rare beasts at last year’s Spa Classic, but got the opportunity to film them racing against each other on one of Europe’s most historic and well-known racetracks. Check it out above.