Brief XB2 2.0mm dense aluminum framework works for tracks by which more safety is essential. Suitable for medium to high traction tracks. The 1-piece framework design with extra flex characteristic produces more general traction and improves steering. Features extra 4 holes to include extra stiffener to scale back laterally framework flex. This improve rotation and precision on more impressive range. CNC-machined from top-notch Swiss 2.0mm 7075 T6 aluminum.