This is the Viper R/C VTX10R Combo Package, with an included 4.5 Turn "VST" Brushless Motor. Viper’s VTX10R electronic speed controller for 1/10 and 1/12-scale RC cars and trucks gives you more features and innovations to make your on-road and off-road RC cars not only ready to run, but ready to compete! The revolutionary V-PORT interface allows you to easily manipulate your ESC settings via the included VIPER ProGauge without unplugging the receiver connector. The small footprint allows for a variety of mounting options, while the waterproof aluminum case provides maximum durability.

Viper R/C VST series sensored brushless motors offer smooth and efficient performance, durability, versatility and quality. The VST series motors feature a re-buildable design and high precision ball bearings for superior performance, and long life. Plus, five optional tuning rotors offer a wide range of tuning options, allowing you to get the most out of your motor. A precision machined 6061 T6 billet aluminum ribbed can is designed to provide the best protection and cooling, while the ultra low resistance, high current soldering tab system provides trouble free connections and easy wiring.

The Viper ProGauge is a revolutionary innovation that lets you monitor and program your electronics quickly and easily wherever you are! This pocket size 5 in 1 tool is a must have item for your tool box! With an easy-to-read interface, straightforward logic and a limited 1 year manufacturers warranty, the Viper ProGauge offers the most all-in-one functions, the easiest setup and the smallest size of any device on the market.

Engineered, built and tested to meet the needs of even the most demanding RC car applications, Viper R/C products have been proven to provide smooth and reliable performance for your RC car.

ESC Features:

• True sensored system
• Dynamic drag brake setting by motor RPM and curve profiles
• Dynamic timing boost for competitive track conditions
• Detailed throttle punch/curve setting
• SBEC up to 7.0V for the best steering response
• Battery cut off, ESC temperature, and motor temperature protection
• LED indicator for STOCK/MODIFIED class race
• Auto time-out power off
• Waterproof case
• ProGauge Multi-Function Meter
  
• VIPER Software for firmware upgrade (link device sold separately)
• 8 Default standard set up profiles that allow quick set up without ProGauge for easy bashing enjoyment 
  

Motor Features:

• High grade copper solder tabs
• Lightweight design
• High grade components throughout!
• Ribbed Can adds valuable cooling surface area
• Sealed Can adds longevity and durability
• Molded timing cap protects sensor board and lightens motor
• Fully adjustable timing
• ROAR legal
• Laser engraved, no stickers
• 5 optional high performance rotors
• 180 day warranty

You can use the ProGauge as:

• A Li-Po Battery Monitor:
  • For 2S to 6S Batteries
  • High REsolution to 1mV per Cell
  • Total/Max/Min/Delta Cell Voltage
• A Servo Tester:
  • Manual/Auto Mode
  • 760uS/1520uS Neutral Selection
  • Servo Peak Current
  • Supply Voltage
  • Output PPM Signal Display
  • Servo Speed
• An Input Signal PPM Monitor:
  • Signal Measurement
  • Frequency Measurement
  • Receiver Voltage Measurement
• A Propeller RPM Tachometer:
  • 2-8 Blade Propellers
  • Peak RPM Measurement
  • Auto Gain Control
• A Viper Device Programming Card:
  • Programming Display
  • Adjustable Parameters

Motor Specifications:
Turns: 4.5      
kV: 7,400        
Watts: 521       
Case Length: 2.12 in. (53.80mm)
Case Diameter: 1.42 in. (36.00mm)
Shaft Length: 2.6 in. (13.8mm)
Shaft Extension: 0.58 in. (14.8mm)
Weight: 6.35oz (180g)

ESC Specifications:
Model: VTX10R
ON Resistance: 0.000225Ω * 2
Battery Support: 2~3S Li-Po   
Max Peak BEC voltage/amp: 7V / 5A
Motor Limit: 36mm/ 2.5T
Dimensions (WxLxH): 30x32.5x19.5mm