Shock Absorber Type 640 Road Preload Adjuster:Hydraulic Preload Adjuster (Wilbers-PA) (+$505) the Wilbers Adjustline Type 631

the Wilbers Adjustline Type 631 shock absorber is ideal for motorcycles with limited space

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

semi-active system that continuously adapts to road surface and riding conditions

Precision Rebound Adjustment: Dial in your rebound damping to prevent the bike from bouncing or packing down over successive bumps

which for most riders barely compresses over potholes and bumps

Shock Absorber Type 640 Road Preload Adjuster:Hydraulic Preload Adjuster (Wilbers-PA) (+$505) the Wilbers Adjustline Type 631The 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