For over nine decades, at countless dirt tracks across America and beyond, midget racing cars have been at the very heart of grassroots motorsports.

Often viewed as a waypoint on the road to higher-profile series—not without reason, given the number of stock car racers and Indy champions that cut their teeth behind the wheel of these machines—midget racing has always engendered lively competition and created heroes of its own.

The car offered here, the Lloyd Rahn Dekalb Special, is emblematic of midget racing’s thrilling post-war era.

To start, it rides on a chassis and features artful aluminum body panels by one of American racing’s most fabled constructors, Frank P.

Kurtis.

Kurtis’ cars were both beautiful and fast, and his Kurtis-Kraft company proved adaptable, producing midgets, sports cars, Indianapolis race cars, and more.

A 110-cubic-centimeter Offenhauser overhead-cam four-cylinder, undoubtedly one of the most famous—and certainly among the winningest—racing engines of al...