RRP RX4 Rear Delrin Bulkhead (Right) - RRP-018 Fits: RRP RX4 (Yokomo MX4 Worlds Prototype)Material: Delrin. Strong and durable material worthy of use on race, and shelf queen builds. RRP RX4 Rear Delrin Bulkhead (Right) RRP-018SKU: RRP-018$20.00PriceQuantity*Add to Cart