North 2021 Sonar alloy Foil mast
The new refined, thicker walled aluminium foil section gives the best balance between light weight and increased strength for higher loads. The AF72 Mast is 30% stiffer than the AK70 mast yet only 13% heavier, and is ideal for shallower waters, and prone surf foiling. The AF85 Mast is 30% stiffer (due to internal increase in wall thickness) than the AK85 kite mast yet only 13% heavier, and it increases overall ride performance in choppy conditions.