XRAY 302143-S X4 CFF Soft Carbon-Fiber Upper Arm - Precision Grip  [XR-302143-S]

Controlled Traction with the XRAY 302143-S CFF Arm

The XRAY 302143-S X4 CFF Carbon-fiber Fusion Upper Arm is created for racers who prioritise consistent lap times and stable handling on low-grip layouts. It combines a carbon fiber core with a softer composite exterior to enhance mechanical grip and side bite on slick asphalt and carpet tracks.

Fused Materials for Tuned Behaviour

XRAY's CFF process bonds carbon and composite layers so the inner carbon plate governs stiffness while the outer composite provides deliberate flex. This balance keeps responses predictable while improving traction through mid and exit phases of corners.

Fitment and Practical Notes

Fitted to the front left and rear right positions on X4 cars, the soft arm suits very low to low traction conditions. Operators should be mindful that the softer compound trades some impact resistance for increased grip, so regular inspection is recommended.