HPI Racing A933 Nitro RS4-2/RTR Carbon Fiber Graphite Upper Radio Tray Deck & Accessories. This listing is for a Super Rare and vintage HPI Racing A933 Nitro RS4-2/RTR Carbon Fiber Graphite Upper Radio Tray Deck & Accessories. LAST ONE up for sale! Please DO NOT use our pictures for your own listings. Thank you for […]