XRAY introduces an optional front and rear roll-center holder for XB2 2wd buggy. They are CNC-machined from high-quality Swiss 7075 T6 aluminum. Alu holder increases strength and makes the handling more precise and more forgiving. Suitable for very-high-traction tracks. The front roll-center holder fits both Dirt & Carpet Edition while the rear roll-center holder only fits to the Carpet Edition.