3RACING 3RAC-HKS30F/BU 3.0mm Blue Aluminium Single Servo Arm for KO Propo and Sanwa  [3RAC-HKS30F/BU]

Improve wheel control with the 3RACING 3RAC-HKS30F/BU upgrade

The 3RACING 3.0mm Aluminium Single Servo Arm is a simple, effective upgrade for KO Propo and Sanwa servo setups. The blue anodized finish gives a clean look while adding the stiffness needed for more predictable steering input.

Benefits of aluminium servo arms

Compared with stock plastic arms, aluminium reduces flex under load and delivers crisper response at the wheels. That extra rigidity helps when you need repeatable steering for lap consistency or tight course control.

Where to use this servo arm

Designed for KO Propo and Sanwa servos, this arm suits a range of vehicles from nimble on-road cars to mid-size off-road buggies. Fit it when you want firmer steering feel and improved hardware longevity.

Fitting and upkeep

Installation is straightforward: confirm servo spline match, align the arm, and secure screws to the manufacturer torque spec to prevent slippage. Periodic checks for tightness and wear will keep steering precise over time.