Wilbers fork spring set, progressive, for HARLEY-DAVIDSON FLHTCUSE4/5/6/7/8 CVO Electra Glide Ultra Classic, Type FL 2, Model Year 09-13

Product details

Wilbers fork spring set, progressive, for HARLEY-DAVIDSON FLHTCUSE4/5/6/7/8
CVO Electra Glide Ultra Classic, Type FL 2, Model Year 09-13, Only one spring replace, Renew oil in both fork legs!, (fork oil must be ordered separately), with ABE (General Operating Permit) according to application

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. The combination of "Zero Friction" fork springs with the specially developed Wilbers fork oil, as well as observing the correct air chamber for the respective vehicle, is very important. If desired, individual tuning can be achieved in special cases 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 by vibratory finishing:
During vibratory finishing, the components to be processed, such as Wilbers fork springs, are located together with an abrasive medium specially designed 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 medium, leading to a smoothing of the component upper surface due to constant rubbing. At the end of the process, a fine, shiny surface is achieved.
For Wilbers fork springs, this reduction in surface roughness means a minimisation of friction = ZERO friction.

Each fork spring set includes a recommendation for the viscosity of the fork oil and the height of the air chamber 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.