I have been scouring the internet and forum threads I still cannot figure this out and hoping some of the aero gurus on this forum could help me out?. I currently have a Cannondale Slice Hi-Mod (2011 Chrissy Wellington version) with Profile Design Cobra carbon base bar and T2+ aerobars. In the pursuit of trying to improve my 40km TT time I am trying to figure out what sort of ballpark time savings I may get by switching to something like the 3T Ventus or Tri Rig integrated bars, and whether upgrading to a Shiv TT module (using the Shiv aerobar) would get me any significant additional savings over this (I actually like the P5 but the Shiv geometry fits me better). I still love my Slice so would prefer to spend less and just upgrade the aerobar if that will get me most of the time savings.

For information my last 40km TT I averaged ~290w for 57mins, and hoping I get get an additional 30-60s with either an aerobar and/or frame upgrade. Assume fit and everything else remains the same as I will transfer my components and replicate my existing fit if I was to get a new frame.

Thanks alot in advance!.