SCS compression is the most effective scooter compression on the market.  Many riders opt for a less expensive compression system and, eventually, decide to make the move to SCS.  If you are one of those riders, pick up an SCS bar adapter from this category to convert your bars to SCS.  Two critical notes.  (1) It is virtually impossible to remove a bar adapter that has been inserted into your bars so make sure you want to convert to SCS permanently.  (2).  Make sure you buy either a standard or oversized adapter that corresponds to your bar inner diameter.