Armstrong S1 Adapter for Evolution Masts

Our Armstrong S1 adapter was reverse engineered from the Armstrong Bottom Bracket, and offers an OEM quality fit to your S1 fuselage. If you already have the Armstrong fuselage or prefer their alternate lengths, this adapter is a cheaper alternative than our direct-connect Armstrong fuselage. It also adds a few centimeters to your mast when compared to the direct-connect fuselage. It is fully compatible with Armstrong-suppled M7 and M8 hardware.