Description SPI Tether Switch-High quality tether switch built to OEM specifications. OEM Part Numbers; 410-1067-00Applications:2005 Ski-Doo GTX 550F 2006 Ski-Doo GTX 550F 2007 Ski-Doo GTX 550F 2008 Ski-Doo GTX 550F 2009 Ski-Doo GTX 550F