XRAY 303181-M X4 Medium Rear Left Lower Arm Carbon-Composite  [XR-303181-M]

Medium CFF Rear Left Lower Arm for XRAY X4

The XRAY 303181-M CFF Carbon-Fiber Fusion rear lower arm pairs a graphite plate with a composite shell to form a single suspension component optimised for bitumen track use. This fusion gives a harmonised flex response that helps drivers find consistent lap times.

Construction and material balance

By embedding a carbon fiber element inside a composite arm, XRAY achieves a useful compromise between stiffness and give. The medium durometer provides enhanced traction while keeping the part light and robust for race conditions.

Track performance on bitumen

The medium variant offers more compliance than the harder option, which can aid front-end feel and rotation on tight layouts. The design supports repeatable handling under a range of temperature conditions.

Direct replacement for left rear

Purpose made for the left rear position of XRAY X4 models, the arm uses the original mounting points so you can swap it in without modifying other chassis parts.