The SSKL – engine displacement more than seven litres, 300 hp output and 235 km/h max. speed
The development of the SSK was testimony to the popularity of hill-climb races in Germany. Narrow hill roads with numerous sharp bends called for more agile vehicles. The designation K referred to its short wheelbase ("K" for "kurz" = German for "short"). This period of development reached its peak with the presentation of the SSKL. The designation L ("L" for "leicht" = German for "light") referred to its reduced weight. By making several boreholes in the vehicle frame and cross-beams, engineers were able to reduce the weight by as much as 125 kg. The SSKL weighed around 1352 kg – not much for a 7065 cm³ supercharged six-cylinder engine. With its 300 hp, the new Mercedes-Benz accelerated to 235 km/h.
During this period, Rudolf Caracciola recorded one victory after another with the SSK and SSKL and enjoyed worldwide fame. He underlined the exceptional qualities of the Stuttgart racing car. All other private drivers, who enjoyed varying degrees of recognition, also contributed to the first-class reputation of the brand with the three-pointed star.