XRAY 302134-S X4 CFF Upper Arm Soft Version Front Right Rear Left  [XR-302134-S]

Control and Grip with XRAY 302134-S Upper Arm

The XRAY 302134-S X4 CFF Upper Arm soft version improves steering control and adds side traction for low-traction racing surfaces. It is designed for installation on the front right and rear left of the X4 chassis as a targeted handling upgrade.

Material Choice and Clearance

Produced from CFF (Carbon Fiber Fusion), the arm delivers a balance of flex and strength for consistent handling. The profile leaves adequate clearance near the inner shock while preserving the load paths that assist forward and lateral traction. Remember that the soft option trades some durability for increased mechanical grip.

Race-Day Setup for Low Traction

For very low to low grip tracks, this arm helps minimise radial play and sharpens response through turns, helping drivers maintain a predictable line. It is a practical option when extra side traction is needed to improve lap times on tricky surfaces.