XRAY 303180-H X4 Fusion Rear Right Lower Arm Hard Carbon-Fiber  [XR-303180-H]

CFF Fusion Rear Arm Optimised for X4 Chassis

The XRAY 303180-H CFF Carbon-Fiber Fusion Rear Lower Arm is made specifically for the XRAY X4 range. Fusion-bonded carbon fiber and composite create a lightweight but tough right-side arm that sharpens suspension behaviour on demanding tracks.

Balanced Rigidity with Controlled Flex

The design uses an internal carbon plate whose thickness governs stiffness, while the composite exterior smooths out flex and rebound. This balance helps maintain steady handling and predictable traction transitions during multi-turn sections.

Best Used on Carpet and High-Grip Tracks

This hard-spec rear lower arm is aimed at drivers tackling carpet and high-traction asphalt, offering freer suspension movement and reduced tendency for the car to bite and then stop mid-corner.

Compatibility and Quick Swap Guide

Made for the right side of the XRAY X4 chassis, the part mounts to factory points and fits with standard hardware, making it straightforward for experienced builders to install.