This product can used on FCX24 K5 PRO, FCX24 K5, FCX24 Power Wagon, FCX24 Lemur, FCX24 Unimog, FCX18 LC80. To use on models above, you would also need MG44 + R4P1 Transmitter Receiver Set BS Version For 1:24 K5 PRO, FCX18 LC80 Brushless (SKU=C3656) to match.