Wilbers fork spring set, progressive, for HARLEY-DAVIDSON XR 1200 Sportster, Type XR 1, Model Year 08-10, 35 mm lowering

Product Details

Wilbers fork spring set, progressive, for HARLEY-DAVIDSON XR1200 Sportster, Type XR1, Model Year 08-10, 35 mm lowering incl. reducing sleeve, (fork oil to be ordered 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, we generally recommend a progressive fork spring to optimise the response and, on the other hand, to increase the bottoming resistance. Crucially, it is important to combine the "Zero Friction" fork springs with the specially developed Wilbers fork oil and to observe the correct air chamber for the respective corresponding vehicle. If desired, individual tuning can be achieved in special cases by changing the air chamber.
For motorsport applications, we recommend the very lightweight 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 componentes to be processed, such as Wilbers fork springs, are placed together with 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 lead 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 a minimisation of friction = ZERO friction.

Each set of fork springs 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.