{"product_id":"spektrum-firma-3660-4000kv-4-pole-brushless-motor-5mm-spmxsm5000","title":"Spektrum Firma 3660 4000Kv 4-Pole Brushless Motor 5mm SPMXSM5000","description":"\u003cp\u003eThe Spektrum Firma 3660 4000Kv 4-Pole Brushless Motor is a sensorless 2S to 3S LiPo motor for compatible ARRMA and other surface RC vehicles needing a durable 5mm shaft replacement motor.\u003c\/p\u003e\n\u003cp\u003eThis Firma brushless motor is suited to compatible 1\/10 and 1\/8 scale surface RC applications where a 3660-size 4000Kv sensorless motor with 4mm bullet connectors is required. The 4-pole rotor, CNC-machined aluminium housing, high-purity copper windings and alloy steel output shaft make it a practical replacement for worn or damaged brushless motors in suitable high-power RC builds.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e4000Kv Brushless Power: Suits compatible 2S to 3S LiPo surface RC setups requiring a 4000Kv sensorless motor\u003c\/li\u003e\n\u003cli\u003e3660 Motor Size: Common performance motor size for suitable ARRMA 3S BLX-style and other compatible RC vehicles\u003c\/li\u003e\n\u003cli\u003e4-Pole Rotor Design: Provides strong torque delivery and smooth brushless motor response\u003c\/li\u003e\n\u003cli\u003eSensorless Operation: Designed for use with compatible sensorless brushless ESCs\u003c\/li\u003e\n\u003cli\u003e5mm Alloy Steel Shaft: Strong output shaft suits compatible pinions with a 5mm bore\u003c\/li\u003e\n\u003cli\u003eCNC-Machined Aluminium Housing: Helps with motor durability and heat dissipation\u003c\/li\u003e\n\u003cli\u003eHigh-Purity Copper Windings: Insulated copper windings support efficient motor operation\u003c\/li\u003e\n\u003cli\u003ePreinstalled 4mm Bullet Connectors: Allows easier installation when used with matching ESC connectors\u003c\/li\u003e\n\u003cli\u003eReplacement Motor Option: Manufacturer listed as a replacement motor for the ARRMA INFRACTION 4X4 3S BLX\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: Spektrum\u003c\/li\u003e\n\u003cli\u003eModel: Firma 3660 4000Kv\u003c\/li\u003e\n\u003cli\u003eSKU: SPMXSM5000\u003c\/li\u003e\n\u003cli\u003eProduct Type: Brushless RC motor\u003c\/li\u003e\n\u003cli\u003eMotor Type: Sensorless brushless\u003c\/li\u003e\n\u003cli\u003eMotor Size: 3660\u003c\/li\u003e\n\u003cli\u003eRPM Per Volt: 4000Kv\u003c\/li\u003e\n\u003cli\u003eNumber Of Poles: 4\u003c\/li\u003e\n\u003cli\u003eVoltage Range: 7.4V to 11.1V\u003c\/li\u003e\n\u003cli\u003eBattery Compatibility: 2S to 3S LiPo, when used with a compatible ESC\u003c\/li\u003e\n\u003cli\u003eConnector Type: 4mm bullet\u003c\/li\u003e\n\u003cli\u003eConnector Wire Length: 50 mm\u003c\/li\u003e\n\u003cli\u003eOuter Diameter: 36 mm\u003c\/li\u003e\n\u003cli\u003eProduct Length: 60 mm\u003c\/li\u003e\n\u003cli\u003eProduct Weight: 300 g\u003c\/li\u003e\n\u003cli\u003eShaft Diameter: 5 mm\u003c\/li\u003e\n\u003cli\u003eShaft Length: 22 mm\u003c\/li\u003e\n\u003cli\u003eManufacturer Listed Application: ARRMA INFRACTION 4X4 3S BLX All-Road RTR\u003c\/li\u003e\n\u003cli\u003eOther Retailer Listed Applications: ARRMA Vorteks 223S, Quake 223S, Fury 223S and Infraction V3 3S BLX\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIncludes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Spektrum Firma 3660 4000Kv 4-pole sensorless brushless motor with 5mm shaft\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat ESC does this motor need?\u003c\/strong\u003e The Spektrum SPMXSM5000 requires a compatible sensorless brushless ESC that supports the motor, vehicle gearing and 2S to 3S LiPo power setup being used.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat pinion bore does this motor require?\u003c\/strong\u003e The Spektrum SPMXSM5000 uses a 5mm shaft, so it requires a compatible 5mm bore pinion gear.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this motor include connectors?\u003c\/strong\u003e Yes. The Spektrum Firma 3660 4000Kv motor includes preinstalled 4mm bullet connectors.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill this fit my ARRMA vehicle?\u003c\/strong\u003e OZRC recommends confirming the required motor size, shaft diameter, connector type, mounting pattern and gearing for your exact vehicle before ordering.\u003c\/p\u003e\n\u003ch3\u003eImportant Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUse only with a compatible sensorless brushless ESC.\u003c\/li\u003e\n\u003cli\u003eConfirm vehicle fitment, motor mount compatibility, gearing and shaft size before installation.\u003c\/li\u003e\n\u003cli\u003eUse a compatible 5mm bore pinion gear.\u003c\/li\u003e\n\u003cli\u003eMonitor motor and ESC temperatures after installation, especially when changing gearing, tyres or battery voltage.\u003c\/li\u003e\n\u003cli\u003eIncorrect gearing or unsuitable battery voltage can overheat the motor or ESC.\u003c\/li\u003e\n\u003cli\u003eMotor only. ESC, pinion gear, battery, vehicle, tools and mounting hardware are not included unless shown separately.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Spektrum","offers":[{"title":"Default Title","offer_id":52624095609144,"sku":"SPMXSM5000","price":135.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/2849\/9768\/files\/Spektrum_Firma_3660_4000Kv_4-Pole_Brushless_Motor_5mm_SPMXSM5000_8.png?v=1783581701","url":"https:\/\/ozrc.com.au\/products\/spektrum-firma-3660-4000kv-4-pole-brushless-motor-5mm-spmxsm5000","provider":"OZRC","version":"1.0","type":"link"}