The M06 has a supercharged, single overhead camshaft, 7-litre straight-6engine[12][13] that produces 200–300 metric horsepower (150–220 kW). Depending on state of tune, there is over 500lbs of torque,[13] which made the SSK the fastest car of its day.[14] A clutch operates the supercharger that is engaged by fully depressing the throttle pedal with an extra push, whereas letting off the throttle pedal disengages it.[12]
^ abHill, Phil (April 1990). Bryant, Thomas L (ed.). "Salon: 1929 Mercedes-Benz SSK Grace that belies its size". Road & Track. 41 (8). Newport Beach, CA, USA: Hachette Magazines: 124–129. ISSN0035-7189. The factory brochure promised, 'This modification has made it lighter, faster, and more flexible; the short model thus of short races, especially in the mountains...'