3Racing SAK-D6823/PU Aluminium Rear Upper Arm (Purple) for Auper D6  [SAK-D6823/PU]

Aluminium rear upper arm for Auper D6

This aluminium rear upper arm is an RC-scale replacement part listed as 3Racing SAK-D6823/PU and finished in purple, intended for the Auper D6 chassis. It serves as a direct rear suspension link component that replaces the factory plastic arm to change stiffness and suspension response without altering core chassis geometry.

Installers should treat this as a like-for-like substitution: remove the original rear upper arm, transfer any retained hinge pins or hardware as required, and fit the aluminium arm to the same mounting points. No additional modifications to the chassis are implied or required by the product description.

On-track, this arm is used for tuning rear suspension behaviour. Swapping from a softer plastic arm to an aluminium arm typically increases lateral and longitudinal rigidity at the mounting point, which can translate to crisper turn-in and a more consistent rear feel under load. Use it as part of an iterative setup process alongside shock valving and anti-roll adjustments.

Routine checks after installation are recommended: verify hinge-pin clearance, confirm retaining screws are secure, and inspect for wear or damage after running. Keep mounting surfaces clean to avoid binding and re-torque fasteners after the first session.

A straightforward aluminium replacement arm to increase rear link rigidity and refine suspension response on the Auper D6 chassis.