This version 2 miragedrive drum (pictured above) is for version 2 drives and can be used to upgrade version 1 drives (version 2 chains required).

Gt Drums are the current item and are interchangeable with V2 Drums but have bearings for less friction. Check drum shaft for wear before fitting. 

SKU: 81173001 (V2 DRUM)  81175001 (GT DRUM)