SPMXSEMC01 Firma 85A Brushless Smart ESC / 3300Kv Sensorless Motor Combo. Forward/Brake/Reverse drivetrain, brushless power.Specifications Motor Type Brushless Connector Type IC3 Product Length 1.7" (43 mm) Product Width 2.1" (53 mm) Product Height 1.3" (33 mm) Product Weight 0.255 Adjustable Timing No Amperage 80A - 99A Application Surface Auto Cutoff Yes Battery Input Lead IC3 Battery Type LiPo (3.7V per cell) BEC Yes BEC Continuous Current 4 BEC Maximum Burst Current 8A BEC Type Switch Mode BEC Voltage 6V/7.4V Brakes Yes Constant Wattage 750-999W Drive Type Forward/Brake/Reverse Efficiency 82% ESC Type Brushless Forward Yes Input Voltage 2-3S LiPo, do not exceed 3S (11.1V) with this motor Integrated ESC No Kv Rating 3000Kv or more Low-Voltage Cutoff Programmable Yes Max Input Voltage 11.1V Maximum Burst Current 550A Maximum Continuous Current 33A Motor Class 1/10 Scale Motor Design Inrunner Motor Output Lead 4 Number of Poles 4 Outer Diameter 1.41" (36 mm) Output 430W(2S), 780W(3S) Part Type Electronics Product Application Surface Programmable Yes Programming Options Button, Programming Box, Smartlink App, On Screen Text Gen Reverse Yes RPM/Volt (Kv) 38,400 @ 12V Sensor Type Sensorless Sensored No Shaft Diameter 0.125" (3 mm) Technology Smart Time Delay Brake Yes Water-Resistant Yes Wire Gauge 12 AWG Manufacturer part number SPMXSEMC01. Checking a part against a model you already own? Send us the number and we will confirm the fit before you buy.Why buy it hereRC Hobby Pros is a real hobby shop in Katy, Texas — not a drop-shipper. We have been in RC for 30 years, we stock parts for what we sell, and we fix what you break. Every vehicle gets checked before it leaves the counter and we will walk you through the first run. Come see it at 555 S Mason Rd, Katy, TX 77450 or call 346-365-2987.