Originally Posted by CHenry
Look at Easton stems, they come with a shim. I recently did a build with a 1 in. steerer and the 31.8mm Deda Newton bars (was 1 in threadless, but with the adapter for a threaded headset, you can attach in the same way.)
The house brand 1-1/8" stem I just got from Nashbar also came with the proper shim to use with a 1" steerer.