Shock Absorber Type 643 Competition PSD Edition:Nightline (+$90) the spring rate has been

the spring rate has been adjusted using a slightly stiffer spring

These have been replaced by progressive fork springs

these improvements result in smoother ride quality

but some riders desire more precise “feedback” from the chassis

The standard fork is equipped with very soft springs

Shock Absorber Type 643 Competition PSD Edition:Nightline (+$90) the spring rate has been643 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,