BlueDevil63 

I'm looking for a set of 26.4 clamp handlebars (probably Cinelli) that have the groove in the front of the bars for routing an aero brake cable under the bar tape. Willing to purchase but also have lots of stuff to trade.

Ex Pres 

What you really need is a set of Cinellis like the one my Miele Gara [did Miele or Cinelli do this?], drilled at both the lever and at the stem to run the cables internally.

I still have them - used a different bar. [Second-hand bike]

BlueDevil63 

I'm leary of the drilled ones, especially if it was not done by the factory. I've seen a number of user drilled bars and always wondered if they were more likely to break.

Ex Pres 

I was leery, too, plus the stem they were attached to was too short, so it was a good excuse to swap out.
I will take a closer look, to see if it appears Cinelli factory or Miele. The bikes did come that way from Miele, so it wasn't the original owner that did it.
According to those with industry experience that post here (and on CR), properly drilled bars don't appear to be a problem. I even bought some of the Cinelli guides/grommets from Mike Kone/Boulder Bike. Don't know if I could find those in my parts bins, however.

Dfrost 

Are you really sure you need that groove? I route the brake and shift housings so that they run on the underside of my bars.

BFisher 

I've got a NOS Cinelli Top 66 Ergo I'd be willing to trade. I'll PM you.

BlueDevil63 

Yep can do that for sure. Just seeing if anyone had the grooved bars since I think it makes for a smoother more comfortable bar.

jethin

I have some fair-good Cinelli Top 66s too if those might interest you. They have grooves on both front and rear. No drilling.