ESG806 is a high quality stator that replaces the OEM stator in the Yamaha YFM250 Big Bear between 2007 and 2009 and the YFM250 Bruin from 2005 through 2006. ElectroSport manufactures the ESG634 stator using a modern stator core and we use the highest grade copper wire for the windings which for optimum results are all installed using our computer controlled winding machines. We use the best quality lead wires with chafe resistant insulation, and high quality rubber seals, connectors and coatings. ESG634 is a direct plug in replacement for the OEM Honda stator and offers superior performance and reliability. Like all stators manufactured by ElectroSport this ESG634 also comes with a full one year warranty.