Bolt-on, universal collar-and-plate adapter for most gearboxes, for use on the YG4 engine out of an RX1 snowmobile, 2003-2005 model years, or Apex 2006-2018. All hardware, gaskets, oil seals and instructions included.  No additional modifications required.  Choose type of engine and gearbox from the options listed.  

Gearbox Adapters for Phazer, Apex, RX1, Nytro etc.