Yamaha 3GG-85550-00-00 Flywheel Rotor Assembly

The Yamaha 3GG-85550-00-00 flywheel rotor is a critical component of the magneto ignition and charging system. It rotates on the crankshaft to generate alternating current for the ignition system and battery charging circuit. The rotor incorporates permanent magnets bonded to the rotor body. This assembly serves as a direct replacement for OEM part numbers 3GG-85550-00-00, 3GG-85550-01-00, and 2GU-85550-50-00. It is engineered for the Yamaha 350cc 2-stroke twin cylinder engine used in Banshee 350 and YFZ350 all-terrain vehicles manufactured between 1987 and 2006. The rotor interfaces with the stator assembly (3GG-85510-00-00) and pickup coil to provide ignition timing signals and electrical power generation.