Wilbers Fork Spring - Zero friction - Progressive Carline We replace the linear fork

We replace the linear fork springs with progressive units for better small‑bump compliance and deeper‑stroke support

The seal not only prevents leakage but also protects fork tubes and maintains smooth motion over time

We move from linear to progressive fork springs for a livelier initial stroke and more reserve in the second rate

An ABE (German type approval) is included to save time and registration cost

and fine-tune your bike's steering geometry and seat height with the built-in length adjuster (+/- 5mm)

Wilbers Fork Spring - Zero friction - Progressive Carline We replace the linear forkWilbers progressive fork springs ZERO Friction finishing Our vibratory finishing process (trough vibrator with tailored media) micro polishes the spring surface. The resulting fine, shiny finish reduces surface roughness and friction hence ZERO Friction. Pair with our specially formulated Wilbers fork oil and the specified air chamber for your vehicle to maximize performance. Product may differ from the picture. Recommended viscosity and air chamber: