Yokomo B-MAX2 25T Servo Arm by Arrowmax AM-MAX2-011  [AM-MAX2-011]

25T aluminum servo arm

This Arrowmax AM-MAX2-011 servo arm is a blue-anodized 7075-T6 aluminium replacement designed for the Yokomo B-MAX2 chassis. As an aluminium 25T horn, it replaces the original plastic part to provide a firmer linkage between the servo spline and the steering linkage while maintaining standard 25-tooth spline engagement.

Installation is straightforward: remove the stock plastic arm, align the AM-MAX2-011 so the servo is centered, fit the spline engagement fully, and secure with the original retaining screw. The arm's profile is made to match the steering geometry of the B-MAX2 without additional modification.

On track the part's role is conservative and mechanical rather than electronic: the 7075 alloy resists deformation under repeated steering inputs and helps keep steering feedback consistent during cornering and high-load transitions. Expect a direct change in steering feel and repeatability compared with a worn or flexible plastic horn; tuning adjustments to end-point and steering trim may be needed after installation to restore center and travel values.