The 2703 V is an air cooled, piston controlled 2-cylinder-inline-2-stroke engine with one or two carburetors and Nikasil coated cylinders. It has one of the highest power to weight ratio available on the 50 HP engine market. Ideally suited for Ultralights, hovercrafts, light experimental aircrafts and all applications where weight is an issue. Factory recommended TBO is rated at 1000 hours at 75 % power.
Description from the website http://www.hirth-motoren.de/en/engine-2703.html on 2014-05-18.