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

Sharper Cornering with XRAY Carbon Upper Arm

The XRAY 302134-S X4 CFF Upper Arm in the soft spec boosts steering precision and increases side bite for low-grip circuits like carpet and worn asphalt. It is configured for front right and rear left positions, making it a direct swap for tuned X4 setups.

CFF Composite and Engineering

Crafted from CFF (Carbon Fiber Fusion), the arm is engineered to deliver controlled flex and repeatable feel. Its shape keeps clearance around inner shock mounts while maintaining strength to support both lateral and forward grip. The softer material improves traction but can be more vulnerable to impacts than stiffer options.

Effective on Slippery Surfaces

Designed for very low to low traction conditions, the soft upper arm reduces radial slop and helps tyres maintain contact patch through turns. This can help drivers manage corner entry and mid-corner balance on challenging surfaces.