APPLICATIONS OF THIS PRODUCT: According to the data provided by the manufacturer, this article is compatible with the following brands, models and years: DERBI ATLANTIS 100: 2000-2006 DERBI Atlantis 2T 100: 2000-2001 DERBI ATLANTIS 4T 100: 2004-2006 DERBI ATLANTIS 50: 1999-2007 DERBI Atlantis H2O 50: 1999-2007 DERBI ATLANTIS O2 50: 1999-2007 PIAGGIO DIESIS 50: 2001-2001