Fox Rear Shock Spring Preload Collar Keep Your Sag Where You Set It When a preload collar wears out, gets lost during a spring swap, or comes up damaged on a rebuild, the fix is straightforward: replace it with the correct OEM part. This collar threads onto the shock body and bears against the coil spring to control preload, which sets your sag and keeps the spring from rattling loose on the trail. It is a direct replacement collar for Fox DHX and DHX2 coil shocks, built to the same spec as the original so your setup stays consistent. Features OEM replacement part matches factory spec for accurate preload adjustment on Fox coil rear shocks Threaded collar design threads onto the shock body to bear against the coil spring and control preload Compatible with Fox DHX and DHX2 shocks verify fitment against your specific shock model year before ordering MFG# 234-00-099 direct Fox factory part number for confident cross-referencing during service or rebuild | Fox Racing Shox | Rear Shock Spring Preload Collar 2005-2012 Dhx And Vanilla R 1. 99 Od