3RACING 3RAC-HKS30/LB Racing Spec 3.0mm Aluminium Single Servo Arm  [3RAC-HKS30/LB]

3RACING Accessories 3.0mm Aluminium Single Servo Arm For Ko Propo/Sanwa - Light Blue - 3RAC-HKS30/LB
Price:
USD$3.50
Brand:
3Racing
Model:
3RAC-HKS30/LB
Condition:
Brand New
Write a review

Race-focused servo arm for 3RACING 3RAC-HKS30/LB

The 3RACING 3.0mm Aluminium Single Servo Arm is tailored for Ko Propo and Sanwa systems where precise, repeatable steering inputs are critical. The light blue anodised surface provides a durable finish that stands up to frequent setup changes and track use.

Performance and setup considerations

Use this arm to tighten steering response and reduce flex in the linkage path. Its aluminium construction helps maintain consistent geometry during aggressive cornering and enables fine tuning of servo throw with minimal material deformation.

Compatibility checklist and fit procedure

Confirm servo spline match with Ko Propo or Sanwa units, centre the servo before locking the arm, and verify control rod angles to avoid binding. Proper centring and secure fastening are essential for predictable lap to lap behaviour.

What tuning benefits does this arm deliver?

It reduces compliance at the servo link, sharpening initial steering response and improving consistency during rapid direction changes, which helps when dialling in differential and ackerman settings.

Any setup steps to avoid binding?

Ensure the arm is fully seated on the spline, centre the servo electronically, and check rod end angles at full lock to prevent binding or premature wear on linkages.

Maintenance advice for regular track use?

Inspect mounting hardware between sessions, clean grit from around the spline, and replace worn retaining screws to keep repeatability consistent under race conditions.