Wilbers fork fork spring kit, progressive, for Harley Davidson FLHRXS Road King Special, Type FL 3, model year 17-

Product details

Wilbers fork fork spring kit, progressive, for Harley Davidson FLHRXS Road King Special, Type FL 3, model year 17- (fork oil please order separately), with ABE according to the 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, we generally recommend a progressive fork spring to optimise responsiveness and, on the other hand, increase bottoming resistance. Crucially, the 'Zero Friction' fork springs must be combined with the specially developed Wilbers fork oil, and the correct air chamber for the respective corresponding vehicle must be observed. If desired, in special cases, individual tuning can be achieved by altering the air chamber.
For motorsport applications, we recommend the very lightweight linear chrome-silicon fork springs from Wilbers, which were co-developed with the motorsport team.

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

Each fork spring set includes a recommendation for 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.

Note: please order the fork oil separately.