Mid-size XB2 2.0mm dense aluminum framework is suitable for tracks which more traction is essential. Recommended for low to medium traction songs. The 1-piece framework design with a growth of flex attribute produces more overall traction and improves steering. Suited to low to moderate traction. Features additional 4 holes to mount extra stiffener to lessen laterally framework flex. This help to increase rotation and accuracy on higher level. CNC-machined from top-quality Swiss 2.0mm 7075 T6 aluminum.