The XB8 framework was redesigned to match both SMOOTH and INTENSE composite radio bins without chassis modification. The front and back downstop screw areas were redesigned and repositioned for improved suspension system down travel and increased reliability. The engine ended up being moved more rearwards. The chassis is CNC-machined from 3mm top-notch Swiss 7075 T6 aluminum; strategically machined in low-stress areas and anodized making it since light as you possibly can without impacting power or rigidity.