I am using a Specialized S-works carbon oversized stem. I did overtighten my original stem which was a giant carbon and cracked the standard sized kestrel bar. Come to find out Kestrel does not recommend that stem be used with their bar. Any guesses why********** Kestrel was awesome though and replaced by bar with an oversized bar. I couldn't believe they did it, especially since it was completely my fault that the old one cracked.

wannaride - to be honest I don't know if it internally butted.

recneps345 - the frame sells for $3300 with the pearl orange paint. The complete bike is a little over $6,000 the way I built it.