Wilbers fork spring set, progressive, for Harley Davidson FXFB Fat Bob, Type ST 1, model year 18-

Product details

Wilbers fork spring set, progressive, for Harley Davidson FXFB Fat Bob, Type ST1, model year 18- (fork oil please order separately), with ABE according to application list

General description

Depending on the application, Wilbers offers progressive or linear fork springs, manufactured from the best and highest quality chrome-silicon steel. For touring and touring sport applications, we generally recommend a progressive fork spring to optimise responsiveness and, on the other hand, to increase bottoming resistance. Crucial is the combination of the "Zero Friction" fork springs with the specially developed Wilbers fork oil, as well as observing the correct air chamber for the corresponding vehicle. If desired, in special cases, individual tuning can be achieved by changing the air chamber.
For motorsport applications, we recommend the very light linear chrome-silicon fork springs from Wilbers, which were co-developed by the motorsport team.

"ZERO friction" friction reduction through vibratory finishing:
During vibratory finishing, the component parts to be processed, such as Wilbers fork springs, are placed together with an abrasive media specially adapted for this purpose in a vibrating container, known as a trough vibrator.
The vibrations of the container create a relative movement between the workpiece and the abrasive media, and through constant rubbing, lead to a smoothing of the component surface upper. At the end of the process, a fine, polished surface is achieved.
For Wilbers fork springs, this reduction in surface roughness means minimising friction = ZERO friction.

Each set of fork springs includes a recommendation regarding the viscosity of the fork oil and the air chamber height in the fork. These values have been determined by experienced Wilbers technicians and ensure optimal riding comfort and feedback at the front wheel.

Please note: please order the fork oil separately.