Perfect RTR replacement. 
With up to 55oz of torque and .08s response time, this digital sub-micro servo is small and mighty. 

The 55Micro is a Direct-fit upgrade for the TRAXXAS® TRX-4™ and TRAXXAS® TRX-4M™ and offers greater performance and reliability anywhere a TRAXXAS® 2065 sub-micro servo might be utilized. Offering a digital core with pulse width modulation control, so your servo will operate in a highly efficient and consistent cycle. If being waterproof and Fully programmable isn't enough, now you can run higher voltage (up to 8.4v), so in most cases there is no need to bypass this tiny servo in your system.

FITS:

• Direct-Fit Replacement Upgrade for TRAXXAS® TRX-4™ TRAXXAS® TRX-4M or #2065 servo
• Any Sub-Micro application that demands high performance and reliability
• Utilizes Standard 25T servo horn such as REEFS V2 HD Shield Servo Horn
  
  

SPECIFICATIONS:

• Waterproof
• Fully Programmable
• High Efficiency w/ Pulse Width Modulation Control
• Steel Gears
• CNC Aluminum Casing
• 2 Ball Bearings
• BEC Not Required
  
  

Dimension: (LWH)

• .90 x .50 x .86 in
• 22.9 x 12.8 x 22 mm

Torque:

• 41 oz @ 6.0v  
• 48 oz @ 7.4v  
• 55 oz @ 8.4v

Speed:

• .11 sec @ 6.0v
•  .09 sec @ 7.4v
• .08 sec @ 8.4v

Spline: 25T STANDARD

Dead Band Width: 3μs

Travel: 180

Angle: No Limit

Voltage: 4.8v-8.4v

Weight: .67oz/19g

Operating Temperature Range: -59°F to 159°F / -15°C to +70°C

For programming, the USB Link is required.