Triumph-Werke Nürnberg AG or TWN, was a German bicycle and motorcycle company.

In 1886, Siegfried Bettmann founded the Triumph bicycle factory in Coventry, England, and in 1896 he founded a second bicycle factory in his native Nuremberg, Germany, under the same Triumph name.

Confusion between motorcycles produced by the Coventry and Nuremberg Triumph companies led to the latter's products being renamed "Orial" for certain export markets.

A split single has one "divided" cylinder (with 2 bores) but only one common combustion chamber and spark plug.

[4] In 1953 a 2 cylinder 250 cm³ single-split model Duplex with 4 pistons was shown at a fair, but not produced.