Flywheel for Polaris Ranger 500 EFI 4x4 2006-2013 | Sportsman 500 EFI HO X2 2006-2014 OEM Repl.# 3089905Don't Repair. Replace like a pro! New Heavy Duty Flywheel Rotor Polaris 500cc ATV UTV Introducing our newest Heavy Duty Flywheel Rotor For Polaris 500cc ATV UTVs. Anyone who rides or repairs Polaris 500cc ATV UTVs 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