Quote:

So will the mounts adjust from 57mm down to 41mm?



No. There is a smaller sized clamp suited for 41 mm applications.

A link to a Memphis Marauder setup.
http://www.memphisshades.com/instructions/9907INSTRUCTIONS.htm
[The color tones pictured are apparently a rendering error -
everything is silver in the actual product]


When I bought the Marauder kit, it came with four clamps that fit 57 mm tubes.
You might want to call the factory [(901) 853-0293 & 0294,] and see if they will substitute four 41 mm clamps for the standard 57 mm clamps.

If they can't decipher what you're after, tell them you need 4 clamps of the size included in the 9887 kit.