The Spacer for Carbon Mast (Square Fuselage) is a windsurfing rigging component from Starboard. Windsurfing rigs are modular systems: sail + mast + boom + mast base + accessories. Each piece can be replaced or upgraded individually as needed.

Important compatibility:

• Masts have different diameters (RDM narrower vs SDM broader).
• Mast bases with different attachment systems to the plug.
• Booms with variable length based on sail size.
• Tensioners and power joints specific to system.

How we recommend it at El Niño Mallorca. Before buying loose components, send us your current kit reference or a photo of the piece you want to replace. Brand or generation mismatch can turn a smart buy into frustration. If you're unsure, write to us.