Do you have a hitch welded on the back or were you going to put them in a rack over the propane tank?
If you don't have a hitch, you will need to find a good shop that can weld it to the frame and reinforce the frame. The bumper will not hold the weight of a bike rack.
Before doing anything, consider your load max is about 1,000 pounds including food, water, propane, battery, clothes, cookware, bedding, tools, chairs, etc. etc. You may not have capacity left for this when you add up hitch, rack, and bikes and other gear which could easily total over 300 lbs.
You need a loaded to go camping weight to see what capacity you have left to use for bikes.
I love cycling buy you may have to put them on the car roof rack and even then your tow vehicle can be over weight.
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2017 SLX 195RB
2021 Jeep Grand Cherokee Summit L 5.7L V8
Andersen WDH hitch, Renogy 100 AH Lithium &
200 Watts solar panels from Renogy
Prev. '14 Jeep Grand Cherokee Overland, gas 3.6 V6
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