The aluminium mast cap is included in our 2019 foil Front wings. The mast cap is made from forged aluminium, resulting in a durable and close fitting cap.
All parts of the Sonar Modular foil system are assembled using Torx T40 screws. We recommend applying a small amount of the marine grease included in the tool kit to the threads and the undersides of the screw heads before assembling your slide (make sure all surfaces are free of dirt or sand beforehand). This Torx T40 screwdriver and marine grease are included in all foil editions. We do not recommend the use of power tools for foil assembly as they may cause damage (as control over torque and force is limited) and will void the warranty.