This are made by N-Fab.
0.92 thick tube and 3/16 mounting plates.
This actually would fare better in side collision. It would absorb more impact although on the rocks it would not be as tough.
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Most slider are 0.120 Dom tube and 1/4" mounting plate.
I can't say whether the Toyota one is from NFab or not. But the Nfab in the link is not the same slider as the one in the photo above with a Toyota OEM part number. The N fab version in the link has significantly heavier duty bracing and has the outer hoop angled up close to the rocker profile. I did the same design with mine for a closer fit. The N Fab also uses mostly square tube except the outer bar. The one from Toyota is straight out and uses all round tube.
Doesn't mean it's not from NFab. Just that the two are not the same.
The 4Runner rock rails look very similar to the original FJ Cruiser rock rails below. So I'd guess whoever made the FJ Cruiser ones also makes the 4Runner version.
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