Roland Sand Design Black Ops Preload Fork Adjusters This item fits: 1988-2014 XL Models 1987-1994 FXR 1991-2005 FXDL and FXD (WILL NOT FIT, 1200S OR 2000-2005 FXDX/FXDXT) For Models with 39mm Forks With the use of an Allen wrench, easily increase or decrease preload to alter the handling characteristics for a softer or stiffer ride. Replaces the OEM top fork caps. Easy installation. No need to remove fork or top triple tree from bike. CNC machined from billet aluminum. Up to 1.15" of preload adjustability. Made in the U.S.A.