Athearn ATHG63839 HO Genesis Motor Retrofit Kit for RTR SD45 / SD40 Locomotives Radio Accessories while the included soft and

while the included soft and stiff spring options allow you to adjust the suspension setup based on vehicle weight

Replaces the stock plastic rear chassis brace in the Arrma #AR320196

1/10 scale on road cars running on 2S and 3S LiPo power

Factory-assembled and pre-filled with 10K silicone oil

Athearn ATHG63839 HO Genesis Motor Retrofit Kit for RTR SD45 / SD40 Locomotives Radio Accessories while the included soft andAthearn ATHG63839 HO Genesis Motor Retrofit Kit for RTR SD45 SD40 Locomotives Overview Three benefits to Genesis power to your RTR Locomotives: Streamlined DCC speed curves Lower motor current draw Quieter motor operation for DCC Sound Features Simple Installation Molded on motor saddle mounts Included extended Dog Bone universal Balanced Flywheels DCC Ready! NMRA 8 pin and Decoder Harness plugs Pre soldered motor wire leads