FITS: YAMAHA WR250 2006-2009 & WR450 2005-2009   100W - DC system - stator, reg/rec 100W - DC system - stator, reg/rec      * Trail Tech stators replace the OEM stator.     * Trail Tech stators increase power output significantly.     * Most Trail Tech stators are compatible with OEM regulator/rectifiers. (The YFZ stator must use a Trail Tech regulator/rectifier.)     * Most Trail Tech stators are custom made by Trail Tech, not purchased from bike manufacturers and rewound.     * Because Trail Tech manufactures stators from scratch, a superior level of craftsmanship, performance and value is achieved.       Trail Tech Stator Complete Electrical System Kits:      * Stator electrical system kits are complete electrical systems.     * Includes Trail Tech stator, regulator/rectifier and model-specific connectors.