If you are a cheap bastidge, try the JC Whitney GIVI knockoff. Yeah it's made in China, and slightly thinner plastic, but for $50, you can't beat it.

I got the large, and if you use the sendnow code, and spend at least $50, shipping is free! When I got mine a month or so ago, it came up to $48, so I added a cheap set of valve extenders, and it totaled $49. Also, this mounts perfectly to the stock Trumpet luggage rack on my Sprint. Kinda big and fugly, but for long trips worth it!

http://www.jcwhitney.com/MATTE-BLACK...4603_10111.jcw

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'03 Sprint ST

Mods: 18T, Gen Mars, Heated Grips, SilverStars, Mufflectomy, Stebel Horn, Pazzo Levers, Corbin GF & L, SkyKing Sliders, NEP