Replacement Drums (with roller bearings) for Hobie MD180 Miragedrives that feature the curved Arc crank system (see example below).
Hobie MirageDrive MD180 Drum Arc V3
MirageDrive MD180 Drum Arc V3 is only compatible with Arc Pedal Cranks (example image below) – these will not fit earlier model MirageDrives that have square cranks (see Miragedrive Drum GT for square cranks). These are also not compatible with the most recent version of square cranks that are now used on GT KU and MD180 KU drives.