Fits '14 - '22 FLHT / FLHR / FLHX / FLTRX / FLTRU / FLTRK Fits '18 - '22 M8 Softail Fits '06 - '17 FXD / FXWD (Except 16-17 FXDLS) Fits '02 - '11 V Rod Great thread-in solution to improve front suspension performance Add preload to stiffen up the front fork for aggressive riding in the canyons Decrease preload to soften the suspension for a day of comfortable cruising The ability to change preload settings also provides improved front suspension performance when going from a single rider to a rider with passenger configuration Allows the user to custom tune the front suspension for any riding condition Pair with a Progressive Suspension Fork Spring Kit to maximize riding performance Threaded preload adjuster with 20 mm (0.8) of adjustment Compatible with standard and 1-2 lower ride heights Improved handling and performance Replaces stock 49 mm fork cap Preload 1/2 hex adjustment tool included Fork Preload Adjuster installation socket included