Athearn ATH98542 HO Sound Ready Underframe, SD40/45 E-Savage Parts they are not intended for

they are not intended for operation while completely submerged in liquid

Precision-molded from tough composite material

reducing the chance of ride height changing mid-run

0mm (4pcs)

500 Wide For RJ Speed Vehicles

Athearn ATH98542 HO Sound Ready Underframe, SD40/45 E-Savage Parts they are not intended forAthearn ATH98542 HO Sound Ready Underframe, SD40 45 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 Earlier models that don't have the Sound Ready starburst on the box will require this underframe in order to use the Genesis Motor Retrofit Kit (ATHG63839) available separately. Simple Installation Includes all weights Included