Emax ECO II is the second generation of Emax engines at an affordable price. Compared to its predecessor, the ECO II is more durable, uses stronger round magnets N52 and has a new glossy design. The engine is suitable for both beginners and advanced pilots. Tweaks such as grooves against slipping of the propeller or securing the engine bell with a screw are a matter of course. We recommend the 1700Kv variant for freestyle or racing 6S copters.