These offset clamps are on every bike built by NLR, DME and many other top builders in the industry. Safety is of the utmost concern so we have made our clamps with a smaller bore size which requires the fork tubes to be machined down. This allows the forks to travel into the clamps and always ensures a hard grip by all pinch bolts. On a lot of clamps they do not do this and the bottom clamp assembly rides onto the reduced dimension of the fork tube only allowing 1 pinch bolt to actually hold the tube on the bottom clamp.