Parts/Radio & control/Servos/KST BLS805X Aluminum Brushless Metal Gear High Voltage Tail Servo
KST BLS805X Aluminum Brushless Metal Gear High Voltage Tail Servo
KST

KST BLS805X Aluminum Brushless Metal Gear High Voltage Tail Servo

Part # KST-BLS805X
Where to buy
$79.99
AMain Hobbies
Seen Oct 12, 2026
$79.99Buy
Prices are as last seen at the store; stock is not tracked.

About this part

Servo Overview:

The KST BLS805X Aluminum Brushless Metal Gear High Voltage Tail Servo is a high-performance servo designed for 550 to 700-class helicopters. It features an aluminum housing and solid metal gears, ensuring durability and reliability during intense flight maneuvers. This servo is perfectly suited for 3D helicopter aerobatics, offering precise and rapid positioning for optimal control. Its compatibility with high voltage (HV) systems makes it an excellent choice for advanced helicopter pilots seeking both power and speed.

About the Metal Gear HV Servo


Performance & Durability

The KST BLS805X is equipped with a brushless DC motor that provides extreme torque and excellent speed, making it one of the fastest servos available for its class. The CNC aluminum case adds robust protection, while the dual ball bearings enhance smooth operation and longevity under heavy loads. With a neutral impulse of 760 microseconds and a possible frequency of 560Hz, this servo ensures quick, accurate response times and reliable returns to the initial position, ideal for demanding 3D aerobatic flying.

Features:

  • Extreme torque and excellent speed
  • CNC aluminum case for durability
  • Brushless DC motor for high efficiency
  • Dual ball bearings for smooth operation
  • Compatible with 550 to 700-class helicopters

Includes:

  • (1) BLS805X Aluminum Brushless Metal Gear High Voltage Tail Servo
  • Servo Accessories
  • Mounting Hardware

Specifications:

Application 550-700 Helicopters
Input Voltage 6.0-8.4V
Operating Speed @ 6.0V 0.048sec/60°
Operating Speed @ 7.4V 0.042sec/60°
Operating Speed @ 8.4V 0.039sec/60°
Dynamic Torque @ 6.0V 76.39oz-in (5.5kg-cm)
Dynamic Torque @ 7.4V 90.28oz-in (6.5kg-cm)
Dynamic Torque @ 8.4V 104.17oz-in (7.5kg-cm)
Pulse/Frequency 560Hz
Motor Type Brushless
Output Shaft Spline 25T
Gear Material Hardened Steel
Dimensions 1.59x0.79x1.5in (40.5x20x38mm)
Weight 2.47oz (70g)

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