Unfortunately the 175 cc family had a considerable drawback. In fact, the flip side of its advantages. After all, the motorcycle was designed by the racing engineer, who spent the best part of his life following the rule brilliantly formulated by Ferdinand Porsche: "The perfect racing car crosses the finish line first and subsequently falls into its component parts”. Four-stroke 175 cc MV Agusta engines were distinguished by excellent dynamics at that time, but not durability. They were even given the nickname “Fragile Diamonds”. In addition, the upper camshaft complicated the procedure for cleaning carbon deposits, which was required several times a season due to the quality of oil and fuel. Therefore, for the new 125cc motorcycle, which was supposed to replace two-stroke models, a simplified version of the four-stroke engine was developed, with pushrods operating the valves.