Note: This is a set,included a ESC+Motor, 10BL120 G2 ESC+540 motor,and you need to choose which motor do you want. Rocket 540 V3 Motor Features: -CNC Machined Billet Aluminum Heatsink Can. -High Purity Copper Windings Maximizes Conductivity. -High Power Solder Tabs. -Removable/Replaceable Rotor. -Powerful Sintered Neodymium Magnet. -Precision Engineered for Maximum Energy Conversion. -Adjustable Timing. -Compatible with any Sensored/ Sensorless ESC. -Dual sensor port . -IFMAR, ROAR Compliance. Hobbywing QincRun 10120BL Sensored ESC Features: High performance, reliable,race-ready ESC.The compact size is suitable forvarious car chassis'. The built-in auto identification system recognizes sensored or sensorless brushless motors. Core competition program forexcellent control feel & multiple programmable items. 8 steps of timingadjustments 4 steps of maximum brake force adjustments 8 steps of dragbrake force adjustments 4 steps of initial brake force adjustments 9 steps ofacceleration (punch) adjustment, from 'soft' to 'very aggressive' to fit fordifferent kinds of cars, tires and tracks. Multiple protections include: Lowvoltage cut-off protection for Lipo or NiMH battery Over-heat protection Throttlesignal loss protection Motor Lock-up protection. Throttle out of control protection, overload protection for escort escort, reliability and durability have been greatly improved. One-button to set the ESC,and easy to reset all parameters to the factory default settings. Compatiblewith optional device - the portable Digital LED Program Card which is especially convenient for outdoor use. Motor Limits: 4-6 cells NiMH / 2S LiPo:3.5T(1/10 On-road),4.5T (1/10 Off-road) 8-9 cells NiMH / 3S LiPo:8.5T (1/10On-road),10.5T (1/10 Off-road) Descriptions: Designed for entry-level and intermediate players to create, inherited the hobbywing products outstandin quality, And simplify the operation of the difficulty, without any complicated debugging to get started. Products for 1/10 & 1/12 car, SUV, F1, drift car for running and daily practice. Motor Specifications: Brand:Rocket Item no.:540 V3 Pro Turns nunmber:3.5T 4.5T 5.5T 6.5T 7.5T 8.5T 9.5T 10.5T 13.5T 17.5T 21.5T optional Please read the parameter chart and instruction carefully ESC Specifications: Brand:Hobbywing Product name:QincRun 10120BL Sensored optional Model:30125000 optional Battery: 2-3s lipo battery Fan size:25*25*10mm Fan Voltage range:5-8.4V Specifications: 33x28x33mm (with fan height) Weight: 105g (including line weight) Package included: 1 x Rocket 540 Sensored Brushless Motor 1 x Sensored line 1 x Hobbywing Sensored Brushless ESC 1 x Instruction Note: Only the above package content, other products are not included. 1.Due to the difference between different monitors,the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. 2.Due to the manual measurement and different measurement methods, please allow 1-3mm deviation.Thanks