Here's an excerpt from my post last year:
The brackets are sold in pairs as Memphis Shades part no. MEM9891. They are intended to fit the *lower* fork shrouds of all years of the America/Speedmaster. On 2007 and 2008 models (and presumably the new 2009s), the brackets will also fit at the bottom end of the upper shrouds. On these later years, the upper shrouds are tapered over most of their length. I initially thought that would prevent use of brackets like these, but I checked with dial calipers and discovered that approximately the bottom 2" of the upper shrouds are straight.
If you have a 2006 or earlier and want to attach brackets to the upper shrouds, you need a different part. Those shrouds are much smaller in diameter than later models, and they are not tapered. The bracket you need for those is MEM9887.
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There are a number of dealers for these parts, but I found the best deal at MADSS. The current price for one pair of the lower brackets, MEM9891, is $49.83 and shipping is free.
