Wilbers Fork Spring - Zero friction - Progressive PD Valve ensuring a smooth and controlled

ensuring a smooth and controlled ride

are equipped with a sophisticated hydraulic system which guarantees exceptional performance in cornering and braking

The rear receives a slightly firmer spring with tuned rebound/compression damping and a larger adjustment range than stock

By upgrading to a true open-cartridge system

Harley-Davidson Street Glide ST / Road Glide ST — Stereo Comfort Package

Wilbers Fork Spring - Zero friction - Progressive PD Valve ensuring a smooth and controlledWilbers 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: