Crawler Monster MN82 MN78 MN99S MN168 Model Upgrade Power Kit Set Contents: Brushless Motor Brushless ESC Receiver for MN series. Other items are not included. The latter half of the images are examples of our installation. You can use the original transmitter as is. Bearings are required for the receiver. Installation is relatively easy without wiring modifications. MN99S is compatible with 280 motor specification vehicles. Other applications seem to be compatible with: 280 motor 370 motor vehicles. Pinion gears need to be changed. Features: Applicable models: MN82 MN99S MN168 MN78 Perfectly fits metal and original gearboxes, 14X14mm opening, no need to expand the gearbox. Smaller, more powerful No need to grind the bottom shell or car shell during installation. After modification, low-speed torque compensation, better linearity, easier to climb Top speed also increases. The torque at low speeds is amazing. Specifications: Product: 2322 2600KV External Climbing Motor Operating voltage range: 5.5-9V Rated voltage: 7.2 [VDC] No-load current: 1200 [mA] max No-load speed: 19000±10% [rpm] Load torque: 100 [gf.cm] Load speed: 17000+10% [rpm] Direction: CCW/CW (when viewed from the output shaft end) Insulation class: Class B Axial play: Max 0.3 [mm] Product: AM32 ESC Operating voltage range: 7.4-11.1V Current: 45A Startup: Sign start Low-speed torque compensation: With low-speed torque compensation Size: 38.5*28*18.5mm Basically, the wiring is plug-and-play. If forward and reverse are not correct, Please swap the wiring. Please install the receiver and ESC in any location. We were able to install it without any problems on our MN82 Pro with the separately listed brass ride height up kit.