The Chassis Rib Brace, Carbon: 8X, 8XE 2.0 is compatible with the TLR 8IGHT-X 4WD Race Buggy Kit (TLR04010), the TLR 8IGHT-XE Elite Race Buggy Kit (TLR04011) and the TLR 8IGHT-X/E 2.0 Combo Race Buggy Kit (TLR04012).