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the shock self-pumps to restore the proper ride height and adjusts damping as pressure rises
The stock setup offers slightly too little negative spring travel
This modification improves handling
but some riders desire more precise “feedback” from the chassis
Shock Absorber Type 643 Competition PSD Lift/Lowering:Std the shock self-pumps to restore643 QSD Diagonal, traversable reservoir. Originally developed for the Honda VFR 1200, this Competition shock adds a diagonally mounted, rotatable compression reservoir to the Wilbers construction kit, unlocking multiple mounting options on bikes with limited space. The upper mount integrates the high and low speed compression adjusters for precise damping control. Spring preload is continuously adjustable with the supplied spanner or, optionally,
