Back skidplate carbon and Aluminum The SRX8 gets the steel framework skidplate as standard function inside difficult anodised chassisplate. As optional things Serpent now releases 2 lighter types of the skidplate1 x coated alumnium1 x carbon fibre .Both are the seal/gasket to shut the diff example. 600897 Skid meal Aluminum SRX8, 600898 Skid plate carbon SRX8