New 4-hole large-bore shock pistons created especially for the wider XRAY shock absorbers. The newly-redesigned pistons use a new manufacturing process to improve roundness, ensuring perfect piston movement in all four shocks. These pistons have actually four (4) straight holes (perhaps not tapered) in sizes of 1.3mm 1.4mm and 1.5mm in every set.
The 4-hole pistons with the same gap diameter have increased oil movement versus pistons with less holes (like, 2-hole pistons). This permits to utilize the thicker (stiffer) shock oil, that will allow for various damping traits.