Carbon fiber rear chassis plate for the HPI Baja 5b. Woven graphite (carbon fiber) options for the Baja 5B off-road buggy not only look amazing, they strengthen and lighten your Baja 5B as well! Impressing your friends was never so easy - just bolt on these factory options for instant coolness and performance! A full range of CNC machined, thick woven graphite options are available to fully outfit your Baja 5B, improving performance and durability at the same time. HPI part # 87444.