The MGP MFX X2 Cobra Clamp is basically the next model up from the Extreme Double Clamp. This Clamp comes with a sweet new cut out and also comes in 2 different colors to make your whip look sick! It is compatible with over sized bars with a slit and does not come with a shim. If you choose to run standard bars, a shim must be purchased! Compatable with Oversized and Standard Size bars with a slit. Shim NOT Included!