Wilbers Fork Spring - Zero friction - Progressive PD Valve Made from lightweight yet strong

Made from lightweight yet strong aluminum with excellent corrosion resistance

ZERO Friction springs plus the right oil deliver a markedly better setup

Only the best materials are used to deliver the renowned Wilbers quality with an outstanding price-to-performance ratio

combined with optimized rebound and compression damping

Newly engineered for IDM Superbike use

Wilbers Fork Spring - Zero friction - Progressive PD Valve Made from lightweight yet strongWilbers 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: