XRAY 302133-S X4 Soft Carbon-Fiber Fusion Upper Arm Race Edition  [XR-302133-S]

X4 Handling Upgrade with the XRAY 302133-S Soft CFF Arm

The XRAY 302133-S X4 CFF Carbon-fiber Fusion Upper Arm is an upgrade aimed at increasing grip on low-traction layouts. Constructed from high-grade graphite paired with a softer composite, this arm reduces weight while improving lateral traction for sharper turn-in.

Material Fusion and Flex Control

The component pairs an inner carbon fiber plate with a composite exterior so the inner plate thickness sets stiffness and the composite governs controlled flex. That tuning gives consistent steering feel and predictable recovery exiting corners.

Where to Use and Fitment Details

Best used on slick or dusty tracks, this soft arm is intended for the front right and rear left positions of the X4 chassis to help balance handling. Remember the softer material can be less impact-resistant than harder arms.