The compression adjustment is made to balance the stability and traction of your vehicle.
When you get your damper from us, the adjustment is always set in the middle.
This way you can adjust according to preferences and / or circumstances.
The high/low speed adjustment is made for your compression damping.
Please note that high and low speed refer to the damper speed, not the speed of the vehicle!
Low speed compression damping generates more stability, especially for the small bumps.
With the high speed compression adjustment you adjusts how the damping reacts on high impacts such as a landing after a jump.