Matthew wanted a racing geometry with a very narrow wheel base for climbing, but still good comfort over longer distances. For this we used a narrow diameter carbon integrated seat post which has a good bit of flexibility in it for extra comfort over longer distances. The lugs I used were handmade by me. We used a height yield bonding epoxy for attaching the carbon seat tube to the lugs.
The weight of the frame including the integrated seat post is 1.35kg. To attain this weight I used Columbus Spirit tubes. With the correct spec of components the full bike will be below the legal race weight!
Columbus Spirit with custom layed carbon integrated seat post
Chris King inch 1/8
Reynolds Assault (clinchers)