This is the powertap that is for sale. It's in great condition and works perfectly.

http://forum.slowtwitch.com/...%20powertap;#2631105
complete with head unit, coded hr strap and everything needed to work properly

it's on a Mavic open pro 32 spoke wheel. If you want I can include the cassette 11-26 SRAM 1070 (shimano compatible)

make a decent offer..

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Pain heals, chicks dig scars, but glory lasts forever! --The Replacements