The most famous motocycles made by Mars were the series of motorcycles called the Weiße Mars ("White Mars"), which included the A 20, MA 25, MA 27, and MA 1000 Sport. Designed by Claus Franzenburg, the A 20 and its derivatives had a box-section frame connecting the headstock to the rear wheel and housing the transmission and drive chain, while the engine was mounted in a subframe below. The flat-twin engine was designed by Franzenburg and manufactured for Mars by aircraft engine builder Maybach. It was mounted with its cylinders in line with the frame. was started with a hand crank, and had an enclosed primary drive to the transmission. The A 20, with a trailing-link fork, was made from 1920 to 1925; the MA 1000 Sport, with a girder fork and recirculating lubrication system in the engine, was made in 1928. Despite being called the "White Mars", the motorcycles were also available in red and green.