Fox suspension float dps a trek rear shockthe float dps a trek rear shock is the highest performing inline shock in the fox line up its design offers excellent bump absorption and a firm lockout the dps damper with three positions openmediumfirm allows you to match any terrain with ease this shock has a tune that has been specifically optimised for trek bikes features adjustments lever actuated compression openmediumfirm modes rebound air spring pressure spring float air spring coa