That be the DP. The knob on the left end is for adjusting. Turn towards the "-" and it will soften it. Turn towards the "+" and it stiffens. For most street riding, I'd adjust it right to the end "-". If you end up tracking the bike, you will find it's sweet spot. It'd designed to stop head shake when the front gets light during acceleration on a track but as the Duc's are pretty stable, even on the softest setting you won't notice it much.