3RACING 3RAC-HKD30/SI Silver 3.0 mm Double Servo Arm for Ko Propo and Sanwa  [3RAC-HKD30/SI]

Precise steering with 3RACING 3RAC-HKD30/SI aluminium arm

If you want crisper servo feedback, the 3RACING 3.0 mm Aluminium Double Servo Arm is a sensible upgrade. Made for Ko Propo and Sanwa systems, the silver finish gives a clean look while keeping costs reasonable.

Built for strength and fit

Forged from quality aluminium, this arm balances low weight with solid stiffness. The 3.0 mm thickness cuts flex under load, improving consistency in steering and throttle response. It matches Ko Propo and Sanwa splines for quick fitment across common servos.

Works across multiple RC uses

From street-style on-road cars to tuned buggies, this servo arm helps keep inputs accurate during tight maneuvers. Its straightforward compatibility means it is a simple parts upgrade for racers and casual drivers alike.