This is a replacement bar pin for FOX shock eyelets, with a 0.750" outer diameter, 4.38" total length, 3.5" eyelet spacing, and M12 x 1.75 threaded holes. It is made from zinc-plated 1045 steel. Rebuilding a worn or lost mount with the correct pin is usually cheaper than replacing the whole shock. Owners on user forums say Fox pins are fitted tightly and have a different end profile than generic bar pins, so a dimensionally matched FOX pin avoids forcing the wrong pin through a bushing and damaging it. The zinc plating adds corrosion resistance for a pin that sits in a mud-exposed mount.
Fitment varies by application, so confirm the pin matches your shock's eyelet size and mount style with the manufacturer before ordering. Per the manufacturer's installation guidance, lightly grease the bushings and bar pins, then use a vise to press the bushing and pin into the shock eye. Some applications need spacers to set the correct bushing compression, and the manufacturer notes kit-specific instructions give the exact spacing. Long-tail searches this part answers include "FOX bar pin 213-63-008," "0.750 bar pin 4.38 length shock," "M12 x 1.75 bar pin shock rebuild," and "FOX shock bar pin replacement."
Owners on user forums report that FOX pins have a different end profile than common bar pins and fit very tightly. Some owners have used a generic pin of the same size and width without trouble, but others found a mismatched pin difficult to press out and damaged. Details vary, so confirm compatibility with the manufacturer before substituting.
Owners on user forums commonly press the pin out in a vise, often with a deep socket or sleeve seated against the shock body and a lubricant applied first. Some owners cut one end of the pin to make removal easier, which lets them press the pin out without damaging the bushing.
Per the manufacturer's installation guidance for Fox shock absorbers, the job is rated easy and calls for a vise, grease, and the correct bushings and sleeves. Light lubrication helps the pin slide through the bushing without tearing it. Keep any spacers, washers, and sleeves you remove, since some applications require them to set the bushing compression correctly. Do not clamp the shock by its plastic spacers, because that can damage the parts. Tighten all mounting hardware to the torque specified in your vehicle's service manual or the kit instructions, since a verified torque value for this pin was not found.
