Napa carries M12x1.25 that was the right length and it fitted fine incase someone reads this needing a quick solution.
I did order a few OEM replacements so I'm not doubting old or low quality caliper bolts when on trails.
Hey guys, I just lost a caliper bolt on some corrugation. Anyone know the size of that fella? Or is that not something I'll find at a parts/hardware/tractor store.