Never used, perfect condition haven't unwrapped it. I'm asking 65pounds which includes shipping fee for UK. https://fanatec.com/eu-en/accessories/pedal-accessories/clubsport-pedals-v3-damper-kit?number=CSP_V3_DK
So as much as I understood, most say, install the brake performance kit and you don't need the damper kit at all, it's a cheaper and a better solution.
However, I have encountered very few, but nevertheless few sources which mentioned combining the damper kit with the brake performance kit...