Xtrig ROCS Pro (Brown) Kawasaki KXF250 21-23 KXF450 19-23 (OS 21-23mm) With ROCS, Xtrig created a new system for an even higher stability of the already top-quality triple clamps. Opposing clamps guarantee an even better functioning of the fork and are more stable than ever. Split clamps improve the bending line of the fork. Improved responsiveness of the fork: Perfect roundness in the clamping area, even under load. Higher resistance of turning the fork legs: Self-inhibition of the fork tubes in both directions. Optimal function of the fork: Split clamps improve the bending line of the fork. Secure clamping of the fork: No mutual influence of the clamping screws preload. Lightweight: No material between the clamping screws. What is the difference between ROCS PRO and ROCS Tech?  ROCS PRO - You can adjust the offset via the stem dependent on track conditions. ROCS Tech - All the same features as ROCS PRO, OEM offset. Non adjustable (Comes with NO stem nut, please use OEM).