The most feature packed R100GS shock on the market. The piggyback reservoir design eliminates the reservoir hose for a cleaner more trouble-free installation and the PDS anti-bottoming valve adds additional compression damping just prior to bottoming. This prevents the kickback you can experience after bottoming into the bumper on other shock brands. With 15mm of hydraulic preload lift, stainless mounting bushings, 16mm piston rod, rebound damping adjust, plus high/low speed compression adjust, there is no more advanced or more adjustable shock available for your R100GS.