Fox DHX2 Factory 2Pos-Adj Rear Shock 2021. Featuring an entirely new chassis and damper, enhanced tunability, smoother action, and a new MCU bumper for progressivity and end-stroke control - the all-new DHX2 is ready to race straight out of the gate. 3 Trunnion mount options are available. The 185x50, 185x55 and 205x60 are Trunnion mount only. Note - spring not included, image for display purposes FEATURES NEW graphics. NEW chassis & damper. Improved bearing ratio for metric sizes. NEW detents on spring collar to prevent loosening under light pre-load conditions. NEW high-flow main piston. NEW MCU bumper for increased end stroke progression and bottom out control. Matching 8-click HSC and HSR adjustment on Grip2 forks and X2 shocks. Reduced friction. Improved high-speed rebound tune-ability via addition of VVC (Variable Valve Control). Increased control and decreased harshness via linear damping. Steel outer body and finned inner body for improved structural rigidity and reduced hysteresis. Ultra-low friction, highly durable damper shaft finish. Independent firm mode circuit firmer lockout than previous DHX2. Reduced length reservoir for better fit on more frames.