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