The upcoming two-wheeler will pay homage to the 1923 R 32.

A spokesperson for BMW's bike-building division has confirmed that the company will launch a retro-inspired model next year in order to commemorate the 90th anniversary of its iconic flat-twin engine.

The yet-unnamed bike will pay homage to the 1923 R 32, BMW's first-ever two-wheeler and the model that inaugurated the company's famed air-cooled four-stroke two-cylinder engine. To this day, many BMW motorcycles still use an engine that is similar in design to the R 32's, and the flat-twin is said to have inspired Walter Becchia when he engineered the Citro├źn 2CV's two-cylinder mill.

A dark teaser image released by BMW shows that the upcoming bike will have a single round headlight, a chiseled gas tank and a short tail, giving it a look that is visibly inspired by modern cafe racers. Technical details about the flat-twin engine are not currently available.

While BMW has not confirmed this, the new model might take the form of a limited edition when it makes its debut.

More information about BMW's upcoming two-wheeler will be released in the days leading up to the "90 years of BMW Motorrad" celebration that will take place in 2013.