Wilbers Fork Spring - Zero friction - Progressive YSS and progressive shim stack for

and progressive shim stack for consistent performance

By pairing a heavy-duty 36mm radial piston with a robust 16mm hard-chrome shaft

Extensively tested in BMW IDM Superbikes

or navigating off-road terrain

while retaining the convenient adjustment through the original ESA module in the cockpit

Wilbers Fork Spring - Zero friction - Progressive YSS and progressive shim stack forWilbers 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: