Armstrong Alloy System Mast Bottom Bracket Size_70cm (27.5”) we’ve made it our mission

we’ve made it our mission to minimise our footprint by designing high quality products that use low impact

Height : 132 mm

Made of blended cotton fabric

Tri Fin Set

Armstrong Alloy System Mast Bottom Bracket Size_70cm (27.5”) we’ve made it our missionFrom Armstrong The Alloy System The Alloy System was designed to enable riders of all skill levels to chase endless experiences on the water. Its modularity, broad performance range and exceptional build quality empowers riders of all levels to progress without limits. Modularity is core to the Alloy System design. Its fully compatible with all our front foils and stabilisers so you as your riding evolves, so can your setup. Building on the knowledge