This is the Viper R/C "VST-XL" 5.5 Turn, 3,700kV Sensored 550 Brushless Motor. From onroad, to offroad, to the rocks, no matter where you drive, Viper R/C has a motor for your application. Ready to run, is not always good enough. You want your car ready to race, with the power, control and reliability to win. Quality craftsmanship, superior materials and a commitment to rigorous testing are at the heart of Viper R/C Solutions’ product philosophy, so your VST motor not only gets you running, but keeps delivering the power you need to get the most out of your RC car in even the most demanding conditions.

Viper R/C Solutions’ VST series sensored brushless motors offer smooth and efficient performance, durability, versatility and quality. The VST series motors features high precision ball bearings for superior performance, longer life and a re-buildable design. 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.

Engineered, built and tested to meet the needs of even the most demanding 1/10 scale RC car applications, Viper’s VST series brushless motors provide the smoothest power band and reliable performance for your 1/10 scale RC car.

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
  
• 180 day warranty

Specifications:
Turns: 5.5      
kV: 3,700        
Watts: 728       
Case Length: 2.87 in. (72.80mm)
Case Diameter: 1.42 in. (36.00mm)
Shaft Length: 3.5 in. (89mm)
Shaft Extension: 0.58 in. (14.8mm)
Weight: 9.45oz (268g)