Piston Pro X Hitch Bike Rack Add-On - 2-Bike LED Lights with 4-Pin Plug Kashima Coat Galaxy Gray. The Kuat Piston Pro X Add-Ons can extend the capacity of the 2" version to carry 3 or 4 bikes total.

Compatible with 2" Piston Pro X

With 1-bike Add-On capacity is up to 50 lb per tray

With 2-bike Add-On capacity is up to 40 lb per tray

Not approved for RV use