About 1975 the leading companies of the Cafe Racer scene were gathered around Anderstorp in Småland, also well known for the Anderstorp Raceway. At the time when the companies Stigefelts Motor, Raask and Muscle Machine where creating fast bikes, Team lotus and swedish race driver Ronnie Peterson where racing in formula 1 cars few kilometers from their workshops - just to put things in perspective.
The Muscle Machine-body was created in 1975 by the two motorcycle enthusiasts Bengt Ek and Roger Johansson. Bengt was a designer and Roger was handy with glass fibre. Muscle Machine produced bodies for a number of different motorbikes from Kawazaki 900, Yamaha XS 500, and the most popular version for the Honda CB750 and CB550. Altogether about 1000 bodies were manufactured by Muscle Machine.