Athearn ATH98542 HO Sound Ready Underframe, SD40/45 Summit Parts An unprecedented size and number

An unprecedented size and number for sports cars at the time

Part number LOS232076

Portal drive axle mount

(4) Metal Field Plates

Made for the Traxxas TRX-4 as listed in the title

Athearn ATH98542 HO Sound Ready Underframe, SD40/45 Summit Parts An unprecedented size and numberAthearn 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