Flywheel.

Listed on the following equipment:
HealthRider - Cross Trainer E330 - HREL05980
HealthRider - Cross Trainer E330 - HREL05981
HealthRider - Cross Trainer E330 - HREL05982
HealthRider - Cross Trainer E530 - HREL07980
HealthRider - Cross Trainer E660 - HREL09980
HealthRider - Cross Trainer E660 - HREL09981
HealthRider - Cross Trainer E660 - HREL09982
HealthRider - Cross Trainer E660 - HREL09983
HealthRider - Cross Trainer E730 - HRCCEL11900
HealthRider - Cross Trainer E730 - HREL11900
HealthRider - E330 - HREVEL05983
HealthRider - E660 - HREMEL09984
Ironman - 530e
NordicTrack® - VGR 850 - NTCCEL47300
NordicTrack® - VGR 900 - NTEL05990
NordicTrack® - VGR 900 - NTEL05991
NordicTrack® - VGR 910 - 831.298940
NordicTrack® - VGR 910 - NTEL05900
NordicTrack® - VGR 940 - NTEL08990
NordicTrack® - VGR 940 - NTEL08991
NordicTrack® - VGR 940 - NTEVEL08990
NordicTrack® - VGR 970 - NTEL11990
NordicTrack® - VGR 990 - NTEL12900
Proform - 510E - PFEVEL45300
Proform - 530E - PFEMEL47300
Proform - 595E - PFEL04900
Proform - 695E - PFCCEL05900
Proform - 695E - PFEL05900
Reebok (Icon) - REL 8 - RBEL12900

* Images may not be identical to part.