3RACING 3RAC-HKS30/BU 3.0mm Blue Aluminium Single Servo Arm for Ko Propo and Sanwa  [3RAC-HKS30/BU]

Accurate steering with the 3RACING 3RAC-HKS30/BU aluminium arm

Engineered for dependable steering response, the 3RACING 3RAC-HKS30/BU 3.0mm aluminium single servo arm fits Ko Propo and Sanwa servo splines and aims to improve precision without adding excess weight. The aluminium build gives a solid feel while keeping mass low for better handling.

Compact strength for tighter control

The 3.0mm thickness delivers a balance of rigidity and lightness, helping to reduce flex under load and maintain consistent steering input. This arm is a practical option for hobbyists tuning steering feel on touring cars and pan cars.

Easy fitment across servo setups

Designed to suit a wide range of Ko Propo and Sanwa servos, the arm installs quickly using standard hardware and can be used as a direct replacement to sharpen steering response on many models.