Originally Posted by
Bezalel
How well does that shim hold? I often ride with inexperienced stokes and am concerned that they may try to twist their handlebars.
Many people here on this forum use a shim. My impression is that it is easier on the seatpost (prevents gouging) than directly attaching a stem of the same diameter. The slight texture on Thomson posts also helps the shim to grip, but you could use some grip compound on most posts and shims if necessary.