We are happy to announce that we've added two new motor options to our Tengu heli motors series, optimized for the standard gearing and required 5mm external shaft diameter of the Synergy 500/550 helis.
The Tengu 4020HS/1190kV with its 5x32mm external shaft will be your perfect drop-in replacement for the Synergy 516. In case you're running your Synergy 516 (556 electro) with larger blades - as Synergy 516S (stretch) version - the Tengu 4025HS/1220kV will be the right choice for you.
Both new models come at the same price as our regular 4020/4025 variants, and the new 5x32mm shaft options are now available for all other 4020 and 4025 sized models as well. Of course separate shaft kits for all versions are also available in case you ever need them.
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