Use this Extension to stack any Fuel Pack on top of the 3 Gallon RotopaX, 3.5 FuelpaX, or 4.5 FuelpaX. Use the standard Extension if stacking the 3 Gallon on top of a 1, 2, or 4 Gallon Fuel Pack.
When purchasing a bed rack from us, you will receive 2-3 packages with separate tracking numbers (one contains the extrusion bars, and the other contains various components and hardware).
Shipping will be determined by weight and your region.