Shock Absorber Type 640 Road Preload Adjuster:Hydraulic Preload Adjuster (Wilbers-PA) (+$505) allowing for a smoother initial

allowing for a smoother initial reaction and greater reserve in the second spring rate

the stock suspension is not as refined as one might expect

but omits the compression reservoir and the option for high- and low-speed compression adjustment

Its floating piston design ensures efficient damping

Shock Absorber Type 640 Road Preload Adjuster:Hydraulic Preload Adjuster (Wilbers-PA) (+$505) allowing for a smoother initialThe basic edition of the Wilbers Adjustline mono shock absorber features the same advanced technology as the more complex versions. The only difference is the omission of the compression reservoir, and therefore the ability to adjust high and low speed compression. Despite this, the shock absorber makes no compromises in terms of response behavior or durability. Its radial piston design, wet run operation, and Teflon guided self aligning bearings