Wilbers Fork Spring - Zero friction - Progressive Fork Tubes The YSS Fork Fork Cartridge

The YSS Fork Fork Cartridge Kit is not just an upgrade

Maintenance‑free spherical bearings deliver long‑term durability

We replace the stock linear fork springs with progressive units for improved initial compliance and greater reserve in the second rate

wiggle-free ride

The stereo alternative with the same Wilbers DNA: stepless preload adjustment

Wilbers Fork Spring - Zero friction - Progressive Fork Tubes The YSS Fork Fork CartridgeWilbers 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: