Aluminum T4F framework increases stability, offers better control and makes the automobile easier to drive in high-traction conditions. Redesigned to support the middle drivetrain system while the narrow mounts the long arm suspension system. The design moves the primary bulkheads towards the center by 1mm, and includes mounting holes for the long arms Extensively tested and suitable for medium-high and high-traction songs, this ultra-narrow framework is CNC-machined from 2mm premium Swiss 7075 T6 and is in addition black coated.