DIY Mod - Adding hidden tailgate step ladder on R1T

Vincent

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Rivian
R1T
So I decided to add a tailgate step/ladder to my R1T truck bed. I started out by taking off the panels and had only a few torx bolts to remove. The top panel snapped a bunch, gonna be cut up anyway so I’m not too concerned. I got the ladder from amazon and the tools I used are

1. Socket wrench
2. T20 Torx screwdriver
3. Phillips screwdriver
4. 3/8" Allen wrench
5. Drill
6. Drill bits
7. Measuring tape
8. Level
9. Clamps

P.S: this is the Amazon link


IMG_1335.jpeg

I tried to keep things in line with the ribs going down the middle, that puts it about 18” wide.

IMG_1337.jpeg

The area has internal chambers around 4-5 inches deep. So I cut through two middle walls to get the full depth unlocked, looking at 17.5” deep

IMG_1338.jpeg

Space was limited and I was working with a reciprocating saw and an oscillating tool. It would be easier if I had a smaller form factor vibe saw and/or an air saw, since I didn't really have lots of space to work with.

I now have a chase that is roughly 2.5x18x17.5 to fit telescoping hardware in. I tried a transom ladder I got on amazon. Noticed I needed to add about two inches of movement to make it so the ladder can fully tuck in but also come out enough to pivot down properly.

IMG_1340.jpeg

This is standard mode height. The rungs fully extend and the bottom one has very minor play. The ladder is rated to 300lbs, may cut a rung (or two) off the bottom so it fully on the tailgate (also would help with stowed mode spacing)
Once I get this boxed in and mounted the next step will be to make the stealth cover with the trim, current idea is to make the cutout and put the "cover" on a spring hinge

Any suggestions/ ideas are welcome!
 
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