ADJUSTMENTS: Calibrated to work with 129" rMotion MXZ rear suspensions. QS Series provides easily adjustable high, medium, low compression settings. New QSR quick switch 3 position rebound adjustment. FEATURES: Genuine Kashima coat. FOX Ice Scraper Technology (FIST).Aerospace-grade PTFE-lined spherical bearings. High-flow velocity-sensitive damping. Fully rebuildable and revalveable.