This series of production racers, or MSDS as they were known in Europe (Machina Sport Derivata dalla Serie) continued using the same frame as the earlier model but with a different tank & seat unit. They continued to employ a massive “cigar” silencer in some markets, straight pipes or the “silenced” mega in others. Most of these bikes were 501xxx series numbers.
The final version of the MSDS had a different “diamond” frame, tank, seat & toolboxes from the earlier models Some would say they are the most handsome version of all the bikes & are not quite as hard to find as the earlier types…or should I say not impossible to find. These versions carry the 501xxx series number.