Key FeaturesSlotted 12-pole outrunner designProp adapter (EFLM1923) and gold-plated connectors includedExcellent motor for small 3D and scale park flyers weighing 10–20 oz (280–560 g)Motor mount includedReplacement for Speed 370 and Speed 400 applicationsQuiet operation\low noise compared to gearbox systemsNeeded To Complete10–20A brushless ESC 10x7 to 12x3.8 prop 7.4V or 11.1V 860–1320mAh Li-Po OverviewThe great performance and small size of this engine makes it perfect for small 3D and other park flyer models. The external rotor design eliminates the need for a gearbox, saving you valuable weight to get the maximum performance out of the model.