Trail Tech (SR-8310 100W Stator Kit Fits KTM 4stk 250/400/450/520/525/530 MXC/EXC 2000-2010 KTM 4stk 250/400/450/520/525/530 XC-F/XC-W/XC-WF/XCR-W/XC-W-CE/XC-W-SD 07-11 (exception: 450/505 XC-F 2008-2009 must use S-8360A) Increase power output significantly, perfect for adding lights and turning night into day Electrical System kits contain regulator/rectifiers and model-specific connectors 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