Fork Spring Kit PD Valve The only difference is that

The only difference is that it omits the compression reservoir and therefore the ability to adjust high- and low-speed compression

Transform Your Front End: YSS CO208 Open Fork Cartridge Kit

the stock spring is replaced with a progressive Wilbers Zero Friction spring

and due to a non-optimal block value

Rebound uses an open-bleed system and is likewise adjustable in 22 clicks

Fork Spring Kit PD Valve The only difference is thatHyperpro Fork Spring Kit features high quality progressive springs, expertly crafted for durability and optimal performance. This kit enhances cornering stability, reduces fork dive, shortens braking distances, and extends tire life.