All Viking shocks are double adjustable allowing the user to independently adjust compression and rebound. Huge adjustment range allows the user to adjust settings for a comfortable cruising to high performance racing, and everything in between. Evenly spaced valving adjustments from click to click 19 positions of compression adjustment and 19 positions of rebound adjustment for a total of 361 different valving combinations. Lightweight aluminium twin-tube design with a sleek clear anodized finish. Adjustment knobs: Labeled with a "C" for compression and an "R" for rebound.