Conversion set for T4'20 to convert it towards the T4'21 Aluminum Solid version. Includes all necessary components particularly aluminum solid chassis, graphite top deck, body upstops & battery pack adj. width dishes, composite 4° c-hubs for human body upstops, composite bumper top holder brace, composite adj. battery pack holders & backstops, springs, ECS drive shafts 52mm, aluminum steering plate 8mm, aluminum belt tensioner, aluminum engine mount, aluminum framework brace, aluminum rear suspension system, holders with centering pin, metal solid drive shafts alongside parts,
