Shock Absorber Type 640 RoadAs standard, the shock absorber of the Harley Davidson Fat Boy 114 FLFBS is fitted with a spring that is too stiff and wound progressively. This causes the second, significantly harder spring rate to be reached too early. With our Wilbers Adjustline shock, we use a linear spring rate and a precisely tuned damping setup. This achieves a noticeably higher level of riding comfort and more stable handling. The negative spring travel has also been