I tried on DJs pretty much any DJ fork out there except for the fox 831...fox 36 float at 100mm, argyle 302, 318, 409, pike 426 coil, 454 dual air, marzo dj1-2-3, custom tuned 80mm z1, manitou goldlabel, sherman jumper and the ones I hated thee most were the RS but the pikes which I'll be buying(454 air) if I cannot find an 831