Mega DS4 standard engine line
Having already announced details on their modified EM versions, Mega have introduced their all new DS4 standard line. The line up includes two buggy engines, the ZX21 5-port and the ZX21-S 3-port, a .21 circuit engine, the ZX21 7-port, and finally a ZX12 2.1cc touring car engine. Easily recognized by their silver colour crankcases, they are cost effective introduction to the Mega DS4 line and all engines are available sperately or as part of a Mega powerpack that includes an inline pipe set packaged in a handy Mega power bag.
Source: Mega [mega-engines.com]