This company develops Limbach and NGL engines for use on ULMs.

-The 275S model is originally a Limbach for use on Dornier RPVs. It has 275 cc and gives 25 hp at 7,500 rpm.

“Ultra Engines 275S”

“Ultra Engines 275S”

-Ultra Engines also adapts the NGL (Normalair-Garrett-Ltd) model, the 342C, which is slightly larger than the previous model, but not much larger, as it has a displacement of 342 cc.

“342 cc”

-Power is 25.5 hp at 7,000 rpm.

“342 cc, top view and front view"