XRAY 303183-M X4 CFF Medium Rear Left Suspension Arm - Precision Fit  [XR-303183-M]

Upgrade Your X4 with a CFF Rear Lower Arm

XRAY 303183-M is a medium-hardness rear lower arm crafted for X4 series models, using Carbon Fiber Fusion to control how the arm bends under load. It refines suspension behaviour without adding unwanted stiffness.

Controlled Bend for Better Mechanical Grip

The CFF layup directs flex to give a more even pressure distribution along the arm, which helps increase mechanical grip and improves turn-in and mid-corner balance on tarmac surfaces.

Medium Hardness for Warm Track Running

This medium option is more compliant than harder arms, making it well suited to hotter conditions where extra forgiveness helps with traction and driver confidence.

Specifically for the Left Rear Position

Designed to match the left rear mounting points of the X4 series, this arm ensures consistent fitment and stable rear geometry during racing or practice.