Flywheel for Polaris Sportsman 600 2004 2005 | Sportsman 700 2004 2005 2006 | MV7 2005 Carb | OEM Repl. # 4010899Don't Repair. Replace like a pro! New Heavy Duty Flywheel Rotor Polaris ATV Introducing our newest Heavy Duty Flywheel Rotor For Polaris ATVs. Anyone who rides or repairs Polaris ATVs is probably familiar with the flywheel problems common to these models. Most of these machines will have at least one flywheel failure in their lifetime so far. Low quality epoxy was used on OEM flywheels to secure the magnets to the rotor body. Over time and many heat