Hirth does not use performance enhancers such as Dyke rings, rotary valves or water cooling. These are all mechanical devices and if they fail or leak, you are coming down. They all require additional maintenance and add to your preflight list. If Hirth ever does offer such technologies it will be because the benefits far outweigh the costs. Hirth has designed an entire line of aircraft engines from 15 to 110hp.
All standard equipment is included in both the list price and total weight.
Reduction drives are optional. Uses Elastometric dampener between engine and drive. Used on 2702.2703,2704 and 2706 Hirth engines. More G-50 Info. More G-40 Info.