This is a Brand New replacement flywheel for Husqvarna 630 models. This high quality unit has been precision engineered and is a direct replacement for the original part. If your ingition has "Kokusan Denki" stamped on it then this is the rotor you need.
2010-2011 Husqvarna SM 630S Flywheel Rotor
2010-2011 Husqvarna TE 630 FLywheel Rotor
If your ignition has Ducati stamped on it then you need rotor p/n RO20.