ESG320 is a high quality stator that replaces the Yamaha -OUTER- stator in Yamaha XJ650, XJ700, XJ750 and XJ900 models between 1981 and 1986. ElectroSport manufactures this stator using modern materials for the stator core, the windings, coatings and lead wires as to be superior to the old-style OEM stator setup on these XJ models. Like all stators manufactured by ElectroSport this ESG320 also comes with a full one year warranty. NOTE: this part DOES NOT INCLUDE THE ROTOR!