2007-2012 Stock Blower, 2.5-3.00 Upper, 10% OD lower, stock tensioner, 90mm Idler 2007-2012 Stock Blower, 2.2-2.6 Upper, 10% OD lower, THUMP tensioner, METCO adj. Idler 2007-2012 TVS Blower, 2.2-2.6 Upper,10% OD lower THUMP tensioner and Metco Adj. idler 2007-2012 TVS Blower, 2.5-3.0 upper, 10% OD lower and stock or THUMP Idlers 2013-2014 TVS Blower, 2.4" upper pulley, stock lower, stock idler & Stock tensioner