{"product_id":"emax-ecoii-3520-brushless-motor","title":"EMAX ECOII 3520 Brushless Motor","description":"\u003ch2\u003eEMAX ECOII 3520 Brushless Motor\u003c\/h2\u003e\u003cp\u003eThe EMAX ECOII 3520 is a high-efficiency, fixed-wing and large multirotor brushless motor built for long-range FPV platforms, UAVs, and cinematic builds running 12\"–15\" propellers on 4S to 12S battery configurations. Built around a 12N14P stator with a compact Ø42.5 × 72mm profile, 6mm steel shaft, and 25×25mm 4×M3 mounting pattern, the ECOII 3520 features enamelled wire leads terminated with male 4.0mm banana plugs for secure, low-resistance ESC connections. Four KV options from 330KV to 770KV cover everything from high-voltage 12S long-range builds to efficient 4S platforms.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eStator configuration: 12N14P\u003c\/li\u003e\n\u003cli\u003eAvailable KV ratings: 330KV \/ 495KV \/ 560KV \/ 770KV\u003c\/li\u003e\n\u003cli\u003eOptimized for 12\"–15\" propellers on 4S–12S builds\u003c\/li\u003e\n\u003cli\u003e6mm steel bearing shaft with CW thread\u003c\/li\u003e\n\u003cli\u003eM6 prop adapter shaft thread\u003c\/li\u003e\n\u003cli\u003e25×25mm — 4×M3 mounting pattern\u003c\/li\u003e\n\u003cli\u003eEnamelled wire leads (95mm) with male 4.0mm banana plugs\u003c\/li\u003e\n\u003cli\u003eMotor mount included for easy airframe integration\u003c\/li\u003e\n\u003cli\u003ePrecision bearings and anodized finish\u003c\/li\u003e\n\u003cli\u003eMulti-strand winding for smooth, efficient power delivery\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKV \/ Cell \/ Propeller Guide\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e330KV\u003c\/strong\u003e — 8–12S — 14\"–15\" props (GF14×7, HQ15×10 2-blade)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e495KV\u003c\/strong\u003e — 6S — 12\"–14\" props (GF12×6, GF13×6.5, GF14×7 2-blade)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e560KV\u003c\/strong\u003e — 6S — 12\"–14\" props (GF12×6, GF13×6.5, GF14×7 2-blade)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e770KV\u003c\/strong\u003e — 4–5S — 12\"–14\" props (GF12×6, GF13×6.5, GF14×7 2-blade)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMotor Model: ECOII 3520\u003c\/li\u003e\n\u003cli\u003eFramework: 12N14P\u003c\/li\u003e\n\u003cli\u003eDimensions: Ø42.5 × 72mm\u003c\/li\u003e\n\u003cli\u003eWeight (with wire): 215g\u003c\/li\u003e\n\u003cli\u003eBearing Shaft: 6mm\u003c\/li\u003e\n\u003cli\u003eProp Adapter Shaft Thread: M6\u003c\/li\u003e\n\u003cli\u003eShaft Thread: CW\u003c\/li\u003e\n\u003cli\u003eLead: Enamelled wire, 95mm, Male 4.0mm banana plug\u003c\/li\u003e\n\u003cli\u003eMounting: 25×25mm — 4×M3\u003c\/li\u003e\n\u003cli\u003eKV Options: 330KV \/ 495KV \/ 560KV \/ 770KV\u003c\/li\u003e\n\u003cli\u003ePeak Current (330KV @ 12S): 52A | Max Power: 2454.5W\u003c\/li\u003e\n\u003cli\u003ePeak Current (495KV @ 6S): 45.1A | Max Power: 1111W\u003c\/li\u003e\n\u003cli\u003ePeak Current (560KV @ 6S): 62.9A | Max Power: 1540.1W\u003c\/li\u003e\n\u003cli\u003ePeak Current (770KV @ 5S): 65.7A | Max Power: 1343.8W\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePackage Includes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e5× M3×6 screws\u003c\/li\u003e\n\u003cli\u003e1× Steel M6 nylock nut\u003c\/li\u003e\n\u003cli\u003e1× Paddle gasket\u003c\/li\u003e\n\u003cli\u003e1× Motor mount\u003c\/li\u003e\n\u003cli\u003e3× 4.0mm female connector\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0371\/2814\/2907\/files\/ECOII-3520_Motor_basic_information_V1.0.png?v=1787085110\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0371\/2814\/2907\/files\/ECOII-3520_Motor_specifications_V1.0.png?v=1787085123\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0371\/2814\/2907\/files\/ECOII-3520-330KV_Load_test_parameters_V1.0.jpg?v=1787085135\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0371\/2814\/2907\/files\/ECOII-3520-495KV_Load_test_parameters_V1.0.png?v=1787085148\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0371\/2814\/2907\/files\/ECOII-3520-560KV_Load_test_parameters_V1.0.png?v=1787085161\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0371\/2814\/2907\/files\/ECOII-3520-770KV_Load_test_parameters_V1.0.png?v=1787085171\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Emax USA","offers":[{"title":"330KV","offer_id":48192587235564,"sku":null,"price":45.99,"currency_code":"USD","in_stock":false},{"title":"495KV","offer_id":48192587268332,"sku":null,"price":45.99,"currency_code":"USD","in_stock":false},{"title":"560KV","offer_id":48192587301100,"sku":null,"price":45.99,"currency_code":"USD","in_stock":false},{"title":"770KV","offer_id":48192587333868,"sku":null,"price":45.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0371\/2814\/2907\/files\/3520-560KV_1.jpg?v=1787085052","url":"https:\/\/shop.emax-usa.com\/products\/emax-ecoii-3520-brushless-motor","provider":"Emax USA","version":"1.0","type":"link"}