HPI Micro Carbon Fiber Racing Chassis Kit 2mm thick carbon fiber chassis kit for HPI Micro's. This chassis is light weight and strong yet still allows the chassis to flex for better handling Included with kit Includes part # 1801 Carbon Fiber Chassis part # 1802 Carbon Fiber Top Plate and Part # 1803 Carbon Fiber Rear Suspension Plate for a "Xtreme" Micro.