Athearn HO Sound Ready Underframe, SD40/45
Athearn HO Sound Ready Underframe, SD40/45
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Manufacturer: Athearn

Key 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 mounting screws
  • Integrated speaker box


Three benefits to Genesis power to your RTR Locomotives:

  • Streamlined DCC speed curves
  • Lower motor current draw
  • Quieter motor operation for DCC Sound

Search Terms: ATHG63839, ATH90115, ATH34128, Sound Ready, SD45LOCO, SD40LOCO, SD38LOCO, SD39LOCO, RTR, Retrofit, ATHSE15, ath_1115, bfs18

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