Wilbers Fork Spring - Zero friction - Progressive PD Valve Threaded Preload & Length Adjustments:

Threaded Preload & Length Adjustments: Easily adjust your rider sag using the threaded preload collar

and safer ride without compromising on comfort

divey under hard braking

Adjust it on the fly to match your load or road conditions

or the stealthy

Wilbers Fork Spring - Zero friction - Progressive PD Valve Threaded Preload & Length Adjustments:Wilbers 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: