Kokusan Flywheel for Aprilia RSV4 1000 Factory / R 1000 / RF 1000 / RR 1000 2011-2020 | Tuono V4 1000 / 1100 2011-2020Don't Repair. Replace like a pro! New Heavy Duty Flywheel Rotor Aprilia Motorcycle Introducing our newest Heavy Duty Flywheel Rotor For Aprilia Motorcycles. Anyone who rides or repairs Aprilia Motorcycles 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