SCS compression is by far the most effective scooter compression on the market. Typically riders opt for a less expensive compression system and eventually decide to upgrade their pro scooter to SCS. Pick up an SCS bar adapter from this category to convert your bars to SCS if you are upgrading your scooter compression . Two important notes. (1) It is just about impossible to remove the bar adapter after it has been inserted into your bars. Make sure you want to convert to SCS permanently. (2). Make sure you buy either an oversized or standard adapter that is compatible with your bar diameter size.