HIC / IHC / ICS clamps

They’re usually called double clamps because the most common size is the classic 2 bolt. This type of clamp is basically only fastening the bar to the fork / shim to keep it in line and attached. This is why the bar will always feature a slit when being used with this type of clamp.

Most of them come oversized with a shim to convert between standard and oversized bars. As always, there are some exceptions. Be careful when choosing!

SCS clamps

The SCS clamp itself is a compression system. This is why you need a bigger clamp with more bolts. It usually has 4, but some models have 3. The upper part of the clamp holds the bar and the lower part holds the fork. The compression is done with a vertical bolt that threads into the fork.

Most of them come oversized with a shim to convert between standard and oversized bars. As always, there are some exceptions. Be careful when choosing!