The Fox 803-00-221-A is a stem-mount shock mounting hardware kit for the 1/2-inch (0.500-inch) stem on stem-top shocks, the upper mount that holds the shock's threaded stud and bushing. Owners on user forums say the factory bushings on some Fox 2.0 stem-top shocks are very firm, and that overtightening those hard bushings can strain the stud where it threads into the aluminum body. That makes a replacement set worth considering if your current hardware is worn, deformed, or has been over-torqued. Confirm the part number against your own shock before paying for an upgrade.
Buyers searching for a Fox stem top shock bushing replacement, a 1/2 inch pin-top shock bushing kit, or Fox 2.0 upper shock mount hardware should check fitment first, because the manufacturer's application data was not available in our research and one forum poster was unsure this kit matched their shock. A forum poster also observed that the bushing can balloon when the nut is drawn too tight, so set the stem snug rather than cranking it down. Installation suits a home mechanic with basic hand tools, and the stem end is a small, contained job once the shock is out of the vehicle.
Owners on user forums report that the top stem on front stem-top shocks has no published torque value, so the usual advice is to snug it and avoid over-compressing the bushing.
An owner on a user forum reported using an Allen ratchet to hold the shock piston while loosening the locknut with a wrench, which allowed the old bushing and washer to come off without trouble.
Owners on user forums have linked this part number to the stem mount on Fox 2.0 stem-top shocks, but one poster said they were not certain. Confirm the fitment with the manufacturer using your shock's part number before ordering.
Plan on basic hand tools: a wrench for the locknut and an Allen ratchet or similar tool to keep the shock piston from turning while you loosen it. Owners on user forums report that the old locknut came off without much effort using that method. Lightly grease the outside of the new bushing before seating it, as one forum member did, and snug the stem rather than over-tightening it. Owners have reported that overtightening can deform the lower bushing and, in some cases, pull the stud out of the shock body, so take your time when setting the torque.
