This stator magneto alternator generator flywheel rotor is compatible with R1, FZS1, FZ8-N, FZ8, and FZ1 models.It is designed to support consistent power generation within the motorcycle's electrical system.Constructed with magnets and metal components, the rotor is built to perform reliably under regular riding conditions.The unit is compatible with YZF-R1 model years 2004 to 2008 and FZS1 models up to 2015.Its design allows for straightforward installation into the existing stator and magneto setup.