The 23 Series is an air cooled two-stroke engine that makes an excellent choice for light aviation devices weighing up to 120kg. Sets world-class standards in its power-to-weight ratio for the 50-horsepower market achieving performance and reliability unmatched in the industry.

The Hirth F-23 is a twin cylinder, horizontally-opposed, two stroke, carburetted or optionally fuel injected aircraft engine designed for use on ultralight aircraft. It is manufactured by Hirth of Germany.

Description: The engine F-23 of Hirth Motoren GmbH & Co. KG is an air-cooled, Piston port-controlled opposed two-cylinder 2-stroke-engine. The cylinder consists of an aluminium alloy with wear-resistant tread alloy.

23 SeriesF23 LIGHTWEIGHT Ideally suited for light and ultralight aviation. The 23 Series is an air cooled two-stroke engine that makes an excellent choice for light aviation devices weighing up to 120kg. Sets world-class standards in its power-to-weight ratio for the 50-horsepower

hirth 发动机 f23 23系列 非常适合轻量和超轻航空器。 23系列是空气冷却二冲程发动机，对于重量高达120kg的轻型航空设备，这是一个不错的选择。

23 SF23 LIGHTWEIGHT eries Ideally suited for light and ultralight aviation The 23 Series is an air cooled two-stroke engine that makes an excellent choice for light aviation devices weighing up to 120kg. Sets world-class standards in its power-to-weight ratio for the 50-horsepower

Hirth engines are designed specifically for aircraft use. Hirth does not make snowmobile, water craft, or car engines and then try to modify them for aircraft applications. Hirth knows that in order for a 2 cycle engine to perform properly in aircraft use, peak power and peak torque have to be achieved at lower RPMs.

Hirth23系列是一种风冷二冲程发动机，是重量达120公斤的轻型航空设备的绝佳选择。

Sets world-class standards in its power-to-weight ratio for the 50-horsepower market achieving performance and reliability unmatched in the industry. This engine series offer a time between overhauls of 1000 hours and is fit to take on any challenge in the future.

Hirth F23 – 50hp. Simple and modern 2 stroke engine from proven manufacturer. The most powerful engine installed. Suitable for heavy pilots and operation from short or high altitude airfields. The values of speeds are about 3% lower for TG and TGC version and 2 % lower for full XL cabin hood. SD-1 is single seat modern microlight (SSDR).