3RACING 3RAC-HKS30F/RE Racing Grade 3.0mm Aluminium Servo Arm  [3RAC-HKS30F/RE]

Racing grade control with 3RACING 3RAC-HKS30F/RE

The 3RACING 3.0mm Aluminium Single Servo Arm is machined to tight tolerances for a precise spline engagement with Ko Propo and Sanwa servos. Its red anodized finish provides corrosion resistance while the stiff 3.0mm section reduces servo output flex under load, aiding consistent steering geometry during competitive runs.

Servo compatibility and chassis integration

Designed specifically around Ko Propo and Sanwa spline profiles, this horn integrates cleanly into standard touring and race buggy setups. The reduced deformation compared to stock plastic horns helps maintain alignment through hard cornering and throttle transitions.

Setup notes for tuners

For optimal response, centre the servo digitally before mounting the horn and verify linkage lengths to avoid end-of-travel binding. Use matched clevis positions to preserve predictable throw ratios; the 3.0mm thickness is a common choice for a balance of stiffness and manageable rotating mass.