Hey Nate, the Roadmaster Crossbar-Style Base Plate Kit # 3158-1 is a kit which will come with both sides as well as the mounting hardware.
If you're looking for a complete setup, you're also going to need:
- A tow bar # e44ZR,
- A braking system # RM-9060, with the seat adapter # RM-88131, and the brake lite relay # RM-88400,
&
- A wiring harness # RM-15247. view full answer...