Editing Vespa (section)

===Relaunch in North America===
{{Unreferenced section|date=July 2010}}
Piaggio first came back into the market in 2001 with the ET2 (two stroke 50&nbsp;cc) and ET4 (four stroke 150&nbsp;cc). In 2004, the PX (model year 2005) was reintroduced to North America to meet market demand for the classic Vespa design. Growth in the US market and worldwide environmental concerns meant a need for larger and cleaner engines, so Vespa developed the LEADER (Low Emissions ADvanced Engine Range) series of four-stroke engines. The larger Granturismo frame, with larger {{convert|12|in|adj=on}} wheels, was introduced to handle the additional power. The bike in 2006 spawned the iconic GTS-250ie version, with an upgraded suspension and the new QUASAR (QUArter-liter Smooth Augmented Range) 250&nbsp;cc fuel-injected engine, capable of 80+ mph.  As of the end of 2010 the GTS 250 has been replaced by the GTS 300 which has a 278cc fuel – injected engine. In 2005, the ET was withdrawn from Europe and North America and replaced by a new small-frame scooter, the LX range. These were available in the US in 50&nbsp;cc and 150&nbsp;cc versions, while Europeans could choose a 50 cc, 125&nbsp;cc and 150&nbsp;cc..{{fact|date=May 2025}}