Flywheel Rotor for Ski-Doo MX Z / MX ZX / Summit 500 600 700 800 cc 2003-2007Don't Repair. Replace like a pro! New Heavy Duty Flywheel Rotor Ski Doo Snowmobile Introducing our newest Heavy Duty Flywheel Rotor For Ski Doo Snowmobiles. Anyone who rides or repairs Ski Doo Snowmobiles 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