Weight Upgrades for HO Athearn RTR Cars
Passenger Cars
| Kit # | Description | Price |
| 2047R | Streamline Passenger Car Kits | $5.14 |
| 2047R2 | Streamline Passenger Car Kits (2 pack) | $9.49 |
| 2048R | Heavyweight Passenger Car Kits (except RPO) | $5.14 |
| 2048R2 | Heavyweight Passenger Car Kits (except RPO, 2 pack) | $9.49 |
| 2229R | Heavyweight RPO Car Kits | $5.14 |