Ta en ventil från en slang, ta bort gummit på ventilens nedre del, gänga ventilen, borra och gänga locket och täta med gängtejp. Sen är det bara att pumpa och känna efter.

 Preload and higher progression with keept small bump sensitivity.

 Cool i like to see people modding factory stuff, so its a shraeder valve put through the spring side topcap?

 No, it's the oil side. The spring side cant hold the air pressure and you won't get the progression etc. You need the oil level to work with the air volume to the get the effect. That's where you get the progression, with the oil-level you can also adjust the remaining air volume when bottom out and buy adjusting that volume and also the pressure while fully extended you can set it up pretty good. You don't need fancy buttons and kashima-coat if you know what you're doing

 cool thanks i like your thinking