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New version Vittorazi X Helix Propeller for Vittorazi Moster Plus/Silent and EFI - 140cm - 55mm Bolts Reqiured.
No spacer is needed with the cooling cowl fitted. If the spacer is fitted for your own reason, then 70mm bolts are needed.
The new propellers for the Moster 185 collaboration between Vittorazi and Helix are lighter weight and fast accelerating.
*image for illustration purposes only. Bolt Plate not included.