Made from riveted 5052-H32 aluminum sheet.

CAD design and laser cut parts.

7.93 gal. (30 liters) capacity.

Weight of the tank empty: 6.9 lb. (3.13 kg.); Full: 51.87 lb. (23.53 kg).

Easily removable. The tank is secured in place with straps. Just disconnect the tubes and straps and it can be removed in ten minutes.

The installation of the auxiliary tank does not alter the plane’s centre of gravity beyond the permitted range even when the plane is fully loaded, with two occupants, baggage and full fuel tanks. Ask for the "Weight and Balance Calculator for the Sonex" in Contact menu. 

The auxiliary tank is equipped with a fuel valve device which is easily operated from within the cockpit.