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

Precision steering with the 3RACING 3RAC-HKS30F/BU arm

The 3RACING 3.0mm aluminium single servo arm offers a tidy performance upgrade for models using KO Propo and Sanwa servos. The anodized blue finish is corrosion resistant and gives firm, reliable control at the wheel.

Why choose aluminium over plastic

Aluminium brings increased stiffness and lower deformation under load, so steering inputs track more accurately. That makes it a practical upgrade for club racing or weekend track sessions.

Compatibility notes and common uses

Made to match the mounting style of many KO Propo and Sanwa servos, this arm suits both precise on-road cars and durable off-road kits. It is a good choice when you want improved steering accuracy without complicated mods.

Quick installation advice

Fitment is straightforward: confirm spline compatibility, align the arm square to the linkage, and tighten fasteners evenly. Inspect the mounting regularly to maintain peak performance.