Shock Absorber Type 640 Road Fork Upgrade Kit we pair a slightly softer

we pair a slightly softer spring with optimized rebound and compression damping for improved compliance without sacrificing stability

Replacing damaged fork tubes — especially USD types — can get expensive

in combination with optimized rebound and compression damping

harder spring rate is reached later

the vehicle has too much negative travel

Shock Absorber Type 640 Road Fork Upgrade Kit we pair a slightly softerAs 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