This allows you to fit Xtrigs renowned PHDS system to your OEM top clamp. The PHDS (Progressive Handlebar Dampening System) is a system supported by elastomers designed to absorb engine and chassis vibrations. The system also dampers the forces acting on the handlebar in a horizontal and vertical direction, maintaining steering precision. The handlebar can be adjusted in 12 different positions when the PHDS is mounted. Only available in 28.4 mm bar diameter and only compatible with OEM triple clamp.