Conversion set for T4'20 to change it toward T4'21 Graphite variation. Includes all necessary components such as for example graphite framework, graphite top deck, body upstops & battery power adj. width dishes, composite 4 c-hubs for human anatomy upstops, composite bumper top owner brace, composite adj. electric batteries holders & backstops, springs, ECS drive shafts 52mm, aluminum steering meal 8mm, aluminum gear tensioner, aluminum engine mount, aluminum framework brace, aluminum rear suspension system, holders with centering pin, metal solid drive shafts alongside components.