Öhlins STX 46 Adventure Shock Absorber YA 818hlins STX 46 Adventure Shock Absorber YA 818 A well proven monotube design, the hlins STX 46 shock absorber sets the standard for performance, quality, and durability. A major suspension upgrade for your Adventure, Street, or Naked Sport Bike. It features a large 46mm main piston, an external gas reservoir, and a hydraulic preload adjuster. With adjustable compression and rebound damping, you can change the behavior of the shock to suit your taste.