The piston options ended up being indeed updated for perfect fit and dampening inside unique big bore shock systems. The 2-hole pistons (1.6 and 1.8mm) are an integral part of 2.0mm and 2.5mm level options. Additionally, two sets of blank pistons both detailed options are included for particular personalized modification. All pistons are made of Delrin and so are additionally molded using ultra-high precision moulds.