Parts/Radio & control/Servos/Spektrum RC S6400 Digital High Speed/High Torque Waterproof Metal Gear Servo (High Voltage)
Spektrum RC S6400 Digital High Speed/High Torque Waterproof Metal Gear Servo (High Voltage)
Spektrum RC

Spektrum RC S6400 Digital High Speed/High Torque Waterproof Metal Gear Servo (High Voltage)

Part # SPMSS6400
Where to buy
$99.99
AMain Hobbies
Seen Oct 12, 2026
$99.99Buy
Prices are as last seen at the store; stock is not tracked.

About this part

Servo Overview:

The Spektrum RC S6400 Digital High Speed/High Torque Waterproof Metal Gear Servo is a premium solution for 1/10-scale RC enthusiasts demanding peak performance. Built on the foundation of the race-proven S6245, the S6400 adds a 25T output spline and delivers faster speeds and higher torque in a low-profile package. Its design makes it a great fit for racers, bashers, and crawlers alike, especially where space is limited but performance cannot be compromised. This high-voltage-compatible servo brings power, precision, and reliability to the forefront of your RC setup.

About the Servo


High Performance in a Compact Design

The S6400 stands out with its blend of speed, torque, and durability, housed in a stylish black and silver aluminum case that not only looks great but also helps with heat dissipation. Its robust construction includes a hard-anodized 7075 aluminum output shaft and steel internal gears for superior longevity. Dual bearings and reinforced aluminum mounting tabs provide a secure fit and smoother operation under load. With high-voltage compatibility and a removable wire harness for easy wiring, the S6400 is engineered to meet the demanding needs of modern RC applications.

Features:

  • Low-profile design for space-saving installations
  • 25T output spline for broad compatibility
  • Stylish stealth black and silver aluminum case
  • High torque: up to 266 oz-in at 7.4V
  • Ultra-fast response: 0.06 sec at 7.4V
  • High voltage (HV) compatible up to 7.4V
  • Removable wire harness with 2-inch extension included
  • 7075 aluminum output shaft and steel internal gears
  • Dual main output shaft bearings
  • Aluminum mounting tabs for secure fit

Includes:

  • (1) S6400 Digital High Speed/High Torque Servo
  • (1) 2-inch Extension Wire
  • Servo Accessories

Specifications:

Application 1/10
Input Voltage 6.0-7.4V
Operating Speed @ 6.0V .08 sec/60°
Operating Speed @ 7.4V .06 sec/60°
Dynamic Torque @ 6.0V 206 oz-in (14.83 Kg-cm)
Dynamic Torque @ 7.4V 266 oz-in (19.15 Kg-cm)
Gear Material Metal
Motor Type Brushed
Output Shaft Spline 25T
Dimensions 1.61x0.83x1.18in (41x21x30mm)
Weight 2.2oz (62g)
CA Residents Prop 65 Warning WARNING: This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov Details...

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