High Quality Content by WIKIPEDIA articles! The Imme R100 was a lightweight motorcycle made by Riedel AG from 1948 to 1951. It is noted for its simple and innovative design, which included single-sided suspension front and rear, interchangeable wheels front and rear, the complete drivetrain mounted on the swingarm, the swingarm tube used as the exhaust pipe, and the same diameter tubing used for the frame, the steering head, and the suspension. With low cost and technical innovation, the R100 sold well, but reliability problems and low profit margins resulted in warranty costs driving Riedel AG into bankruptcy.