T4'21 Aluminum Solid Chassis works for high bite carpeting songs such as US black colored colored carpeting style. The T4'21 framework is redesigned to make use of the T4'21 motor mount, T-brace and features holes for centering pins for RF suspension system system obstructs. The holes for brief hands mounting system are removed for improved durability from the framework. Retained from previous 12 months, the mid engine framework design was made to allow for the center drivetrain system as well as the narrow mounts the long supply suspension system system. The aluminum solid framework provides better control, safety and makes the car easier to drive in high traction carpet conditions. Extensively tested and ideal for high- and very-high traction songs, this slim framework is CNC-machined from 2mm premium Swiss 7075 T6 as well as black colored colored coated.