This is a Brand New replacement flywheel for Husqvarna SM610 models. This high quality unit has been precision engineered and is a direct replacement for the original part. This rotor replaces Husqvarna models that have Kokusan Denki ignitions.( look at what is brand that is stamped on your cdi unit) If you do not have this model, please refer to rotor RO20
1999-2008 Husqvarna SM610 Flywheel Rotor
2000-2004 Husqvarna SM610S Flywheel Rotor
If you do not have this model, please refer to rotor RO20.