Wilbers Fork Spring - Zero friction - Progressive PD Valve Threaded Preload Adjustability: Customize your

Threaded Preload Adjustability: Customize your sag perfectly to your weight (with or without luggage or a passenger) using the included YSS preload pin tool

sharp impacts using our proven Touring‑model approach: Zero Friction fork springs with matched damping deliver clear benefits

Why Choose the YSS CO308 Cartridge Kit

Robust Build Quality: Manufactured and assembled in house in YSS's state of the art facility you can be assured quality control in unmatched

or harsh over road imperfections

Wilbers Fork Spring - Zero friction - Progressive PD Valve Threaded Preload Adjustability: Customize yourWilbers 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: