Shock Absorber Type 643 Competition PSD Ecoline the spring preload can be

the spring preload can be continuously adjusted

The second spring rate also provides a greater reserve

We replace the fork’s linear springs with progressive units for better initial compliance and more support later in the stroke

BMW’s Dynamic-ESA adapts to conditions in real time

Body Material: High-grade CNC-machined aluminum

Shock Absorber Type 643 Competition PSD Ecoline the spring preload can be643 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,