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Steps a propeller away from the Moster reduction drive by 15mm.
Fit if using a cooling shroud with any propeller other than the Vittorazi X prop
The Vittorazi Helix X Propeller does not require this spacer, as clearance has been designed in from conception.
Be mindful that you may need longer bolts if fitting this spacer. Check our Bolts Section for information on which bolts to use with properler configuration.
Images show front and back views.