Convenient kits with alternator stator and matching rotor, but stators and rotors are available individually too. Kit for 1988 thru 1999 Evolution Big Twins includes a High-Output 32 amp stator. Kit for 2001 thru 2006 Softail and 2004 thru 2005 Dyna comes with a 3-phase 38 amp stator. Both work with the stock and all aftermarket replacement rectifier/regulator. Made by Standard Motor Products.