3RACING 3RAC-HKS30/BU 3.0mm Blue Aluminium Single Servo Arm  [3RAC-HKS30/BU]

3RACING 3.0mm Aluminium Single Servo Arm For Ko Propo/Sanwa - Blue - 3RAC-HKS30/BU
Price:
USD$3.50
Brand:
3Racing
Model:
3RAC-HKS30/BU
Condition:
Brand New
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Steering precision with the 3RACING 3RAC-HKS30/BU arm

Targeted at competitive hobbyists, the 3RACING 3RAC-HKS30/BU 3.0mm aluminium single servo arm provides a firmer connection between servo and linkages for Ko Propo and Sanwa units. The aluminium construction reduces flex and helps preserve consistent throw under load.

Performance oriented design

The 3.0mm section delivers predictable rigidity while keeping overall mass down, which assists in maintaining chassis balance and quick response. This arm suits setups where precise steering input and repeatable centring are priorities.

Application and setup notes

Fitment to common Ko Propo and Sanwa splines is straightforward. For tuning, pair the arm with appropriate servo endpoints and adjust link lengths to optimise steering arc and neutral alignment for track conditions.

What is the main tuning benefit of this arm?

Using a 3.0mm aluminium arm like the 3RACING 3RAC-HKS30/BU reduces flex compared with thinner or plastic arms, which helps deliver more consistent steering inputs lap after lap.

How should I adjust endpoints after fitting?

Set servo endpoints so steering travel matches your desired throw, then fine tune trim and link lengths. Confirm neutral position before locking hardware to ensure repeatable centring.

Any precautions for high torque servos?

High torque servos can increase load on the spline and arm. Ensure screws are correctly torqued and inspect the interface regularly for play or wear when used in demanding setups.