Trail Tech (S-8360A 90W Stator/Flywheel Kit Fits KTM 4stk 450/505 SXF 2007-2010 (Carbureted engines only) 4stk 450/505 XC-F 2008-2009 4stk 450 SMR 2008 4stk 450SXF 2011-2012 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