T4'21 Aluminum Solid Chassis would work for high bite carpeting songs such as for instance US black colored carpet style. The T4'21 chassis is redesigned to work with the T4'21 engine mount, T-brace and features holes for centering pins for RF suspension system blocks. The holes for short arms mounting system are removed for improved durability associated with the framework. Retained from past year, the mid motor framework design was created to accommodate the middle drivetrain system additionally the narrow mounts the long supply suspension system. The aluminum solid framework gives better control, security and makes the vehicle easier to drive in high traction carpet conditions. Extensively tested and recommended for high- and very-high traction songs, this narrow framework is CNC-machined from 2mm premium Swiss 7075 T6 and additionally black coated.