Headset upper part Viscoset zs44

ViscoSet offers viscous damping to make bikes safer by inhibiting the uncontrolled oscillation of the steering known as "speed wobble". Speed wobbles are vibrations that start out weak and get worse due to harmonics. This scary shimmy can affect the handling of any bicycle under certain conditions and is the result of many different factors.

By using specially designed damping plates above the bearing in the top assembly, ViscoSet stops the oscillation before it can reach a dangerous level. These micro thin plates are inserted into an encapsulated cartridge and connected to both the frame and head tube. When they rotate against each other, a fluorocarbon gel between each layer provides viscous damping and stops the handlebar oscillation before it can reach a dangerous level.