Product Information

Pro-Tech 400 series are made from 45 m/m dia 6262 specification aluminium with adjustable spring seat platform for 1.9" I.D. or 2 ¼" I.D. springs and has a single adjustable knob which adjusts both bump and rebound valving simultaneously. Pro-Tech 400 series have design features total different from any other manufacturer.

    New internal sealing system is designed to eliminate high pressure bleeding so all movement of oil in bump and rebound is consistently controlled through the piston and base valve.
    Extra machining the lower eye mounts into the solid part of the base gives vital clearance and weight advantage as mounting bracket fouling is eliminated.
    The control knob has only 13 click settings with a total movement of 300 degrees (less than one turn).
    Pro-tech has eliminated the coil spring in the control, which most manufacturers still use; coil springs in constant use do not maintain height and will take a set and create inconsistent damping.
    Pro-tech high performance disc spring system, infinitely variable spring characteristics can be achieved by the arrangement of disc springs into stacked column and by adjusting the control knob to change the force/deflection maintaining constant damping.